Seals

In sealing applications, skeleton oil seals are widely used in automobiles, industrial equipment, and various transmission systems. Practical experience shows that sealing performance depends not only on rubber materials and structural design, but more critically on a clear understanding of the lip sealing mechanism and a well-calculated interference fit. This article provides a systematic explanation of the sealing principles and lip interference design of skeleton oil seals from an engineering perspective, offering guidance for selection and design. Structure and Key Parameters of skeleton oil seals Sealing Structure Parameters Structurally, skeleton oil seals achieve sealing primarily through the interaction between the lip and the rotating shaft. Key design parameters include: Lip Type: Single lip: Suitable for general sealing needs Double lip (with dust lip): Designed for environments with external contaminants such as dirt, moisture, or mud Spring Configuration: With spring (e.g., TC, TB types): Provides continuous radial preload, ideal for high-speed or high-pressure conditions Without spring: Used in low-speed, low-pressure, or static sealing scenarios Lip Angle and Thickness: These directly affect the oil film’s ability to form and return, and are critical for achieving dynamic sealing performance. Together, these structural parameters determine the seal’s adaptability to various operating conditions. Definition of Lip Interference Lip interference refers to the dimensional difference between the oil seal’s inner diameter in its free state and the actual operating shaft diameter. Once installed, the lip undergoes elastic deformation due to interference, generating continuous radial contact pressure on the shaft surface—this is the foundation of effective sealing. For standard rotary sealing applications, the following reference ranges are commonly used: Radial interference (single side): approximately 0.2 to 0.4 mm Corresponding diameter interference: approximately 0.4 to 0.8 mm Exact values should be adjusted based on shaft diameter and operating conditions. Fit Parameters and Operating Influences Beyond the seal itself, shaft and system conditions also significantly affect sealing performance. Key factors include: Shaft Surface Roughness: Typically controlled within Ra 0.2 to 0.8 μm Shaft Diameter Tolerance and Concentricity Operating Speed and Temperature Range Typical Application Scenarios skeleton oil seals are commonly used in rotary sealing environments such as: Automotive engines, transmissions, and electric drive systems Industrial motors, pumps, and fans Gearboxes, drive shafts, and mechanical shaft ends In these applications, the seal must not only prevent lubricant leakage but also allow a stable micro oil film to form between the lip and shaft. This reduces friction and wear, ensuring long-term reliability. Sealing Mechanism and Common Issues Sealing Principle of skeleton oil seals skeleton oil seals do not achieve sealing by simply compressing the lip tightly. Instead, sealing is accomplished through the coordinated action of several mechanisms: Lip interference generates initial contact pressure Shaft rotation forms a thin lubricating oil film between the lip and shaft The oil film reduces friction and creates an inward pumping effect Spring-loaded designs provide continuous compensation, maintaining stable contact This oil-film-based dynamic sealing mechanism is the key to long-term, stable operation. Typical Problems Caused by Improper Interference In practice, incorrect interference selection can lead to a range of issues: Excessive Interference: Increased friction and operating temperature Accelerated lip wear Early failure under high-speed conditions Insufficient Interference: Inadequate contact pressure Unstable oil film Leakage or oil flinging Therefore, interference must be carefully balanced to ensure both sealing performance and service life. Key Factors Affecting Interference Selection During engineering design and selection, interference should be determined based on a combination of the following factors: Shaft Speed: Higher speeds typically require reduced interference to minimize friction and heat Operating Temperature: High temperatures soften rubber, so interference may need to be increased Sealing Medium: Low-viscosity fluids demand more stable contact pressure Rubber Material: NBR (Nitrile Rubber): Suitable for standard interference designs FKM (Fluororubber): Offers higher hardness and temperature resistance, requiring more precise interference control Spring Inclusion: Seals with springs are less dependent on the rubber body’s interference and offer greater adaptability Through a combination of well-designed lip interference, stable dynamic oil film formation, and appropriate spring compensation, skeleton oil seals achieve reliable sealing on rotating shafts. Lip interference is not a fixed value—it must be determined based on shaft dimensions, operating conditions, and material properties. A scientifically grounded and well-balanced interference design is essential for achieving both sealing reliability and optimal service life.

Minimum Order: 1000

In sealing systems, the skeleton oil seal (also known as a rotary shaft seal) plays a critical role. It must not only prevent the leakage of lubricants but also block the intrusion of external contaminants such as dust and moisture. While many believe that sealing performance depends mainly on material and structural design, the true core lies in the sealing mechanism at the lip and the proper design of the interference fit. This article provides a systematic analysis of the sealing mechanism and lip interference design of skeleton oil seals from an engineering application perspective, helping you avoid common pitfalls in selection and design. Structural Parameters of skeleton oil seals The structural design of a skeleton oil seal directly affects its sealing performance and service life. Key aspects include: Lip Type Single Lip: Suitable for general sealing applications Double Lip (with dust lip): Ideal for environments with external contaminants such as dirt, water, or mud Spring Inclusion With Spring (e.g., TC, TB types): Provides continuous radial preload, suitable for high-speed or high-pressure conditions Without Spring: Used in low-speed, low-pressure, or static sealing applications Lip Angle and Thickness These parameters influence oil film formation and oil return capability, and are critical for achieving dynamic sealing performance. Definition and Reference Range of Lip Interference Lip interference refers to the dimensional difference between the oil seal’s inner diameter in its free state and the actual shaft diameter. It determines the contact pressure between the lip and the shaft, forming the basis of sealing performance. Typical Reference Range (for standard rotary oil seals) Radial interference (single side): approximately 0.2 to 0.4 mm Corresponding diameter interference: approximately 0.4 to 0.8 mm Properly designed interference ensures effective sealing while minimizing friction and wear, thereby extending service life. Fit Parameters and Operating Conditions Several factors significantly influence sealing performance in real-world applications: Shaft Surface Roughness: Recommended Ra between 0.2 and 0.8 μm. Surfaces that are too rough or too smooth can destabilize the oil film. Shaft Diameter Tolerance and Concentricity: Must meet standard specifications to avoid eccentric wear. Operating Speed and Temperature: High-speed or high-temperature conditions require careful material selection and interference design. Sealing Medium Characteristics: Lubricant viscosity and additives can affect oil film behavior. Sealing Mechanism: Dynamic Oil Film Sealing skeleton oil seals do not rely solely on tightly compressed lips for sealing. Instead, they function through a combination of mechanisms: Initial contact pressure generated by lip interference Formation of a thin oil film between the lip and the rotating shaft The oil film reduces friction and creates an inward pumping effect The spring provides continuous compensation for lip wear, maintaining stable contact This dynamic oil film sealing mechanism is the foundation of long-term, reliable performance. Common Issues Caused by Improper Interference Excessive Interference Increased friction and heat generation Accelerated lip wear and shortened service life Early failure under high-speed conditions Insufficient Interference Inadequate contact pressure and poor sealing Unstable oil film, leading to leakage or oil flinging Spring compensation may be insufficient to maintain sealing Therefore, interference must be carefully balanced to ensure both sealing effectiveness and durability. Key Factors Affecting Interference Design Shaft Speed: Reduce interference at high speeds to lower friction and heat generation Operating Temperature: Increase interference slightly in high-temperature environments due to rubber softening Sealing Medium: Low-viscosity fluids require more stable contact pressure Rubber Material: Nitrile rubber suits standard designs; fluororubber requires more precise interference Spring Inclusion: Seals with springs are less dependent on body interference and offer greater adaptability Typical Application Scenarios skeleton oil seals are widely used in the following rotary sealing applications: Automotive engines, transmissions, and electric drive systems Industrial motors, pumps, and fans Gearboxes, drive shafts, and various mechanical shaft ends In these environments, oil seals must not only prevent lubricant leakage but also maintain stable performance under high-speed, high-temperature, and high- pressure conditions. The sealing performance of a skeleton oil seal depends on both a well-designed lip structure and precisely calculated interference. Together, they form a stable oil film sealing system that ensures efficient and reliable equipment operation. In practical engineering, it is recommended to consider operating conditions, shaft dimensions, and material properties when designing and verifying interference. Only through scientific interference design can the optimal balance between sealing reliability and service life be achieved. If you are currently working on oil seal selection, sealing structure optimization, or troubleshooting sealing failures, feel free to reach out. Let’s explore more efficient solutions together.

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Many people struggle when selecting skeleton oil seals: what’s important in lip design? What’s the difference between spring-loaded and non-spring seals? Based on practical experience, here’s an overview: Lip Design Considerations The lip of an oil seal is like the “gap at the door”—whether it can block oil and dust depends entirely on it. · Single lip: Simple and straightforward, suitable for low-pressure environments, providing basic sealing. · Double lip: In addition to the main sealing lip, there is an auxiliary dust lip, often used in more demanding conditions such as engines and hydraulic systems. · Material selection is also critical: NBR is oil-resistant. FKM is heat-resistant. PTFE is corrosion-resistant, has low friction, and is suitable for high- speed applications. Choosing the right material for the operating environment makes a significant difference in performance. Spring-Loaded vs. Non-Spring Oil Seals · Spring-loaded oil seals: The spring continuously applies pressure to the lip. Even if the shaft wears slightly or temperature fluctuates, the seal remains effective. Commonly used in high-speed, high-vibration, and variable-temperature equipment such as engine crankshafts. · Non-spring oil seals: Rely on the elasticity of the rubber itself for sealing. They have a simpler structure, lower friction, and reduced cost. Suitable for low-speed, dust-prevention, or less demanding leakage requirements, such as fan end covers or agricultural machinery. How to Choose Skeleton Oil Seals? In short: · For complex operating conditions with significant temperature and pressure fluctuations, spring-loaded oil seals are the safer choice. · For general dust prevention, low-speed, and light-load applications, non- spring oil seals are sufficient and cost-effective. Recommendation When selecting oil seals, don’t just look at the price. First, clarify the operating conditions: speed, temperature, pressure, and medium. Then match the material and structure accordingly. This way, you can avoid the embarrassment of “buying cheap but ending up with oil leaks and rework.”

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In machinery and automotive manufacturing, skeleton oil seals play a vital role in protecting lubrication systems, preventing leakage, and ensuring long-term equipment performance. With the sealing market becoming more varied, choosing the right brand and product requires both technical insight and supplier reliability. Below, we highlight DEDE Seal is capabilities first and then place it in the context of other respected global and regional suppliers. Why DEDE Seal Is a Top Choice for Skeleton Oil Seals DEDE SEAL Co., Ltd. has been specializing in sealing technology since 1990, with over 30 years of accumulated expertise in research, development, and manufacturing of oil seals and related products. Core Strengths of DEDE Seal · Extensive Product Range: DEDE produces a comprehensive lineup of industrial oil seals, automotive oil seals, agricultural and construction machinery seals, wind turbine seals, hydraulic seals, and rubber sealing rings. · In-House R&D and Quality Controls: From material selection to production and inspection, DEDE follows ISO 9001 and IATF 16949 standards, ensuring consistent performance and durability across applications. · Global Market Reach: DEDE products are supplied worldwide to industries such as automotive, industrial machinery, mining, wind energy, agriculture, and more. · Fast Delivery & Service: With advanced management systems (e.g., SAP ERP) and a large inventory, DEDE can support urgent orders, making it ideal for distributors and OEMs needing reliable supply and quick turnaround. DEDE is product portfolio includes standard and specialized oil seals such as TG4, EG, VA/VS seals, bonded seals, pneumatic seals, wind turbine seals, motor oil seals, transmission seals, shaft seals, and more—covering both standardized and custom-designed sealing solutions. dedeseal.com Key Applications for DEDE Skeleton Oil Seals DEDE is oil seals are widely used in diverse industrial and automotive environments, including: · Gearboxes, motors, pumps, and industrial machinery · Automobile engines and transmission systems · Hydraulic systems and construction equipment · Wind turbines and power generation units · Agriculture and earth-moving machinery · Household electronics and water systems This breadth of application demonstrates DEDE is capability to serve multiple market segments with high-performance sealing solutions. Other Leading Oil Seal Brands in the Market While DEDE Seal continues to expand its global footprint, several other established brands also serve important roles across different customer segments: · SKF Group A global leader in bearings and sealing products with a broad portfolio including advanced skeleton oil seals designed for high-speed and heavy-duty applications. SKF is known for engineering depth and system-level support. · Freudenberg Sealing Technologies (Simrit) German headquartered supplier specializing in high-performance engineered elastomers and PTFE composite seals for industrial, automotive, and aerospace applications. · Trelleborg Sealing Solutions Swedish company recognized for engineered polymer oil seals and custom sealing systems often specified in marine, oil & gas, and industrial sectors. Other Notable Names Brands such as Parker, James Walker, Garlock, and NAK also contribute to the global oil seal ecosystem with specialized products or regional strengths. How to Choose the Right Oil Seal Supplier To select the best oil seal solution for your project, consider: 1. Operating Conditions: Assess temperature, speed, media (oil, grease, chemicals), and pressure to guide material and design choices. 2. Consistency and Quality: Verify batch consistency, material traceability, and certification standards (e.g., ISO/IATF). 3. Availability and Logistics: Fast response times and local stock support help prevent production delays. 4. Technical Support: Engineering assistance for fitment, material selection, and troubleshooting adds long-term value. A supplier like DEDE Seal balances performance, inventory readiness, and technical service—making it a strong candidate for both standard and demanding sealing applications. When evaluating skeleton oil seals, the brand matters—but performance, reliability, and support matter more.

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When it comes to mechanical systems and rotating equipment, selecting a reliable skeleton oil seal manufacturer is crucial. These seals are not just simple components; they ensure effective lubrication, prevent leakage, and extend the life of machinery. Therefore, knowing which manufacturers can consistently deliver quality products is essential for manufacturers, maintenance teams, and distributors alike. Why Choosing the Right Manufacturer Matters Not all skeleton oil seals are created equal. The differences in materials, precision of the lip design, and quality control during production significantly affect performance. For example, according to a 2023 report by the International Sealing Association (ISA), seals with higher precision in the lip-to-shaft interface reduce leakage by up to 15% in high-speed rotating machinery. This demonstrates that supplier capability directly impacts equipment reliability. Manufacturers with well-established processes can provide: Material consistency: Ensuring seals resist high temperature, chemical exposure, and wear over time. Dimensional accuracy: Critical for high-speed or high-pressure applications. Production stability: Reduces batch-to-batch variation, minimizing maintenance disruptions. Comparing Manufacturers: Domestic vs. Global Strengths When evaluating suppliers, a useful approach is to consider performance versus availability: Global suppliers such as SKF, Freudenberg, and Parker emphasize engineering precision and long-term durability. Their seals excel in demanding environments, such as automotive OEM systems or industrial high-speed applications. Domestic manufacturers, including NQKSF, DEDE, and Trelleborg’s china, offer faster delivery, competitive pricing, and flexibility in custom orders. For industrial operations that require frequent replenishment or a wide variety of sizes, these suppliers are often more practical. Application Scenarios and Practical Guidance Standard industrial machinery: Look for suppliers with broad product ranges and proven supply chain stability. Seals in this category do not usually operate under extreme conditions, so cost-efficiency and availability become the priority. High-temperature or high-speed equipment: Emphasize precision and material performance. Certified manufacturers with ISO 9001 or IATF 16949 compliance provide data-backed quality assurance. Customized or niche applications: Choose suppliers that can offer design flexibility and consultative support, enabling seals to meet specific dimensional or chemical requirements. Next Steps for Procurement Evaluate your operational needs: Identify whether your priority is high precision, quick replenishment, or customization. Check supplier certifications and test data: Prefer manufacturers with quality management certifications and independent testing reports. Request samples and run pilot tests: Before committing to bulk orders, testing ensures the selected seals meet your actual operating conditions. Develop a supply strategy: Consider a mix of global and domestic suppliers to balance cost, performance, and availability. By following these steps, you can ensure that the skeleton oil seals integrated into your equipment will support long-term reliability, reduce downtime, and optimize maintenance costs.

Minimum Order: 1000

In many mechanical systems, oil seals for keeping equipment running smoothly. Whether in automotive drivetrains, industrial pumps, agricultural machinery, or aerospace components, a well‑designed oil seal helps maintain lubrication, prevents contamination, and protects rotating assemblies from premature wear. Because different applications require different materials and structural designs, the global oil seal market has evolved into a diverse landscape of manufacturers, each with its own technical strengths. Well‑Recognized Oil Seal Brands Around the World Across the industry, several names appear frequently in engineering discussions, procurement lists, and equipment maintenance records. These companies have built their reputations through long‑term technical development, stable performance, and consistent product quality. ● SKF SKF is widely known for its work in bearings and sealing solutions. Its oil seals are often used in high‑speed and heavy‑load environments, such as automotive powertrains and industrial motors, where material stability and structural precision are essential. ● NOK NOK has a strong presence in Asia and is recognized for its elastomer technology and sealing design. Its oil seals are commonly found in engines, transmissions, and industrial machinery that require reliable performance under heat, friction, and oil exposure. ● Freudenberg Freudenberg has a long history in sealing technology and supplies oil seals for industries where reliability is a priority, including automotive, energy, and heavy machinery. Its products are often selected for applications involving demanding temperature or chemical conditions. ● Trelleborg Trelleborg focuses on advanced polymer materials and sealing system engineering. Its oil seals appear in aerospace, industrial machinery, and automotive systems, especially where complex or variable operating conditions require careful material selection. ● Parker Parker is sealing products cover a wide range of industrial sectors, from automation to petrochemical equipment. Its oil seals are valued for their adaptability to different media, temperatures, and pressures. ● NQKSF NQKSF has become increasingly recognized for its work in high‑temperature and high‑pressure sealing components. Its oil seals are used in automotive systems, agricultural machinery, and construction equipment, where durability and material stability are essential. The brand’s presence has expanded steadily as more equipment manufacturers adopt its products. ● DEDE DEDE focuses on advanced sealing materials and engineering‑oriented product development. Its oil seals are used in automotive, machinery, and aerospace applications, particularly in environments that require resistance to heat, corrosion, or demanding operating cycles. The company’s emphasis on material research has helped it gain attention in both domestic and international markets. ● CFW, Garlock, WKF and others Several other global manufacturers contribute to the industry with their own specialties, whether in chemical resistance, high‑speed applications, or custom sealing solutions. These brands illustrate how the global oil seal industry is no longer dominated by only a few traditional manufacturers. New players with strong technical capabilities are gradually shaping the competitive landscape. What Determines a Brand’s Position in the Industry Oil seals are evaluated not by marketing but by long‑term performance in real equipment. Several factors influence how engineers and manufacturers choose a brand: Material technology: Rubber compounds, PTFE blends, and composite structures directly affect durability. Design capability: Lip geometry, spring configuration, and surface finish determine sealing effectiveness. Application experience: Brands with proven performance in specific industries often gain trust more quickly. Supply stability: Consistent delivery and technical support are essential for equipment manufacturers. Because each brand has its own strengths, there is no universal “best” oil seal. The ideal choice depends on the equipment’s operating conditions— temperature, pressure, medium, speed, and installation environment. Making the Right Choice for Your Equipment In practice, engineers often begin with the working conditions rather than the brand name. A seal that performs well in a high‑speed automotive gearbox may not be suitable for a chemical pump exposed to corrosive media. Understanding the equipment’s requirements helps narrow the options and identify which manufacturer’s materials and designs align with the application. Many companies use a combination of brands across different equipment types. As long as the seal matches the operating environment and the supplier can provide stable support, it becomes a reliable option.

Minimum Order: 1000

Anyone who has spent time around rotating equipment knows that an oil seal is more than a small rubber ring—it is the quiet guardian of the entire system. When a seal fails, the consequences ripple through the machine: lubricant escapes, contaminants enter, and components wear out faster than expected. That is why selecting the right material is one of the most important decisions made during design. Imagine a gearbox running day and night in a manufacturing plant. The lubricant inside is a standard mineral oil, and the temperature rarely climbs beyond moderate levels. In such a case, a nitrile rubber (NBR) seal performs reliably. It handles petroleum‑based oils well and offers a stable balance between flexibility and durability. For many industrial machines, this is the material that keeps operations smooth. Now consider a different scenario: an automotive transmission exposed to high temperatures and synthetic fluids. Here, NBR would struggle. Fluoroelastomer (FKM) becomes the natural choice because it maintains its properties even when the environment is hot and chemically aggressive. This is why many modern vehicles rely on FKM seals in critical areas. Outdoor hydraulic systems present another challenge. Winter temperatures can cause some elastomers to stiffen, leading to leaks during startup. Hydrogenated nitrile rubber (HNBR) or silicone rubber offers better low‑temperature performance. HNBR also provides enhanced resistance to heat and chemicals, making it suitable for equipment that experiences seasonal temperature swings. Then there are the extreme cases—high‑speed shafts, chemically harsh environments, or applications where lubrication is inconsistent. PTFE seals often step in here. Their low friction and chemical resistance allow them to survive conditions that would quickly degrade traditional elastomers. They are not as forgiving during installation, but when used correctly, they deliver exceptional stability. Selecting a material is ultimately about understanding the environment the seal must endure. Temperature, fluid type, shaft speed, pressure, and even the surface finish of the shaft all influence the decision. Experienced engineers often rely on field data, supplier recommendations, and long‑term performance records to make the final call. A well‑chosen oil seal material does more than prevent leakage—it protects the integrity of the entire system. When the material matches the application, the machine runs cleaner, longer, and with fewer interruptions.

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In industrial machinery, automotive systems, and countless mechanical assemblies, oil seals play a quiet yet decisive role. They are the guardians of lubrication, preventing leakage while keeping contaminants away from sensitive components. Although their function may sound straightforward, the diversity of oil seal designs reflects the complexity of modern engineering needs. Radial Shaft Seals Perhaps the most recognized category, radial shaft seals are designed to protect rotating shafts. Their flexible lip maintains contact with the shaft surface, ensuring oil remains inside while dust and moisture stay out. These seals are widely used in gearboxes, pumps, and engines, where consistent rotation demands reliable sealing performance. Hydraulic and Pneumatic Seals Hydraulic systems rely on seals that can withstand high pressure and fluid dynamics. Hydraulic oil seals are built to resist extrusion and wear, ensuring cylinders operate smoothly. Pneumatic seals, though similar in principle, are tailored for air-driven systems, emphasizing low friction and durability. End Cap Seals End cap seals are used when a shaft opening needs to be completely closed. Instead of allowing rotation, they act as a barrier, blocking oil passage and protecting the housing. This type is common in applications where unused shaft holes must be sealed securely. V-Ring Seals V-rings are elastic seals that fit directly onto the shaft. Their flexible design allows them to act as a flinger, deflecting dirt, water, and other contaminants away from the sealing area. They are often paired with radial seals to provide an additional layer of protection in harsh environments. Axial Seals Unlike radial seals, axial seals are positioned to work against a flat surface. They are frequently used in rolling bearings and other assemblies where axial movement requires a tight yet adaptable sealing solution. Customized and Application-Specific Seals Beyond standard categories, many industries demand seals tailored to unique conditions—high temperatures, aggressive chemicals, or extreme speeds. Manufacturers develop specialized oil seals with reinforced materials, multi-lip designs, or advanced coatings to meet these challenges. Oil seals are not a one-size-fits-all solution. From radial shaft seals to specialized designs, each type addresses a particular mechanical challenge. Understanding these categories helps engineers and procurement professionals select the right seal for their equipment, balancing durability, efficiency, and cost-effectiveness.

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In the world of industrial machinery, the importance of high-quality sealing solutions cannot be overstated. TG4 oil seals have become a cornerstone in the sealing solutions market, thanks to their exceptional durability and performance in demanding environments. This article explores the benefits, applications, and considerations for distributors and wholesalers when selecting TG4 oil seals. What is a TG4 Oil Seal? A TG4 oil seal is a type of rotary shaft seal that is designed to prevent leakage of lubricants, oils, or gases in machinery operating under high pressure, high temperature, or heavy loads. TG4 seals are known for their advanced sealing performance, which is achieved through their unique design and high-quality materials. Some of the key features of TG4 oil seals include: Superior Sealing Efficiency: The TG4 seal’s design allows it to maintain a high level of sealing even under extreme pressures and temperatures, ensuring a reliable seal that reduces the risk of fluid leakage. High Temperature and Wear Resistance: Manufactured from materials that can withstand high temperatures, TG4 seals maintain their sealing effectiveness over time, even in challenging environments. Chemical Resistance: TG4 seals are highly resistant to various chemicals, making them suitable for use in industries such as chemical processing and mining. Ease of Installation: The design of TG4 seals ensures that they can be easily installed, reducing installation time and costs for manufacturers and operators. Applications of TG4 Oil Seals TG4 oil seals are used across various industries, especially where high sealing performance and durability are required. Here are some key areas where TG4 oil seals are commonly applied: Automotive Industry: In automotive engines, gearboxes, and differential systems, TG4 oil seals are essential for preventing oil leaks and ensuring long-lasting performance. Construction Machinery: Equipment used in construction often works under harsh conditions. TG4 seals provide protection against contamination from dirt and debris, ensuring smooth operation of the machinery. Mining Equipment: Mining machinery operates in environments where dust and dirt can damage equipment. TG4 oil seals prevent contaminants from entering the system, prolonging the life of mining equipment. Chemical and Petroleum Industry: In industries that involve high temperatures and pressures, such as chemical processing and petroleum extraction, TG4 oil seals prevent leaks, ensuring safety and efficiency in operations. Key Factors to Consider When Selecting TG4 Oil Seals When selecting TG4 oil seals, distributors and wholesalers should consider several key factors to ensure that they are choosing the right product for their customers' needs: Environmental Compatibility: TG4 seals should be selected based on the specific conditions of the work environment. For high-temperature or high- pressure applications, it’s crucial to choose materials that can withstand those conditions. Sealing Efficiency: The primary function of the TG4 seal is to provide reliable sealing. Ensure that the seal can meet the performance requirements of the equipment, preventing leaks and contamination. Material Selection: The material of the TG4 oil seal directly affects its durability and resistance to wear and chemical corrosion. Choosing the appropriate material for the working environment will enhance the seal’s longevity. Size and Fit: Proper sizing and installation of the TG4 seal are essential for achieving optimal performance. Ensure that the seal fits precisely in the application to maintain a strong seal. TG4 oil seals provide an excellent sealing solution for industries requiring high performance under challenging conditions. Their superior sealing capability, resistance to high temperatures, pressure, and chemicals make them an ideal choice for many applications.

Minimum Order: 1000

With the continuous advancement of technology, the application of robotics has become increasingly widespread in various fields. In these high-tech devices, seals play a crucial role, especially considering the demands for high precision and stability in robots. Seals not only protect the internal components of robots from external environmental influences but also improve their operating efficiency and extend their service life. This article will explore the different types of seals used in the robotics industry and their applications. Types of Seals in Robotics Robots operate in complex and ever-changing environments, so the types of seals used are varied. Common types of seals include oil seals, O-rings, labyrinth seals, shaft seals, and dust seals. Oil Seals: Oil seals are commonly used in parts of robots such as motors and gearboxes, which operate at high speeds. These seals prevent oil leakage, maintain the lubrication system of the robot, and block dust and contaminants from entering, ensuring the mechanical components remain uncontaminated. O-Rings: O-rings are widely used in robotic hydraulic and pneumatic systems to prevent the leakage of fluids or gases. Due to their simple design and efficient sealing capabilities, O-rings are one of the most commonly used seals in the robotics industry. Labyrinth Seals: Labyrinth seals form multiple physical barriers through different-shaped channels and obstacles, effectively preventing the leakage of fluids and gases. These seals are often used in robots that operate in high-pressure and high-temperature environments. Shaft Seals: Shaft seals are used to seal rotating shafts in robots, preventing oil leakage and contamination from entering the robot’s interior. In robots with high-speed rotating components, the sealing performance of shaft seals is especially critical. Dust Seals: Robots often operate in harsh environments with a high level of dust. Dust seals effectively prevent dust and particles from entering the robot's interior, protecting sensitive internal components. Applications of Seals in Robotics The applications of seals in robotics are widespread and cover various aspects of robotic structures. They are particularly crucial in the following areas: Motor and Gearbox Protection: Motors and gearboxes are key components of robots, and their frequent movement and high load operations make them vulnerable to environmental damage. Oil seals and shaft seals are used to protect these parts by preventing lubricant leakage and ensuring the parts are well-protected during high-efficiency operation. Hydraulic and Pneumatic Systems: Many robots use hydraulic and pneumatic systems for operation, and the leakage of fluids and gases in these systems is a common concern. O-rings and labyrinth seals are widely used in these systems to ensure that hydraulic oil and gases do not leak, ensuring the efficiency and safety of the robot. Precision Mechanical Part Protection: The precision components inside robots, such as servomotors, sensors, and bearings, all require protection through seals. In environments with high temperatures, humidity, corrosive elements, or dust, seals effectively prevent harmful substances from damaging these sensitive components. Seal Selection and Challenges For robot manufacturers, distributors, and wholesalers, selecting the appropriate seals can be a challenging task. Here are some key factors to consider when choosing seals: Operating Environment: The environment in which the robot operates, such as temperature, humidity, pressure, and corrosive conditions, greatly influences seal selection. For instance, in high-temperature environments, high-temperature-resistant seals such as FKM seals should be chosen. Sealing Performance Requirements: Different robot components have different sealing performance requirements. For example, seals used in motors and gearboxes need to be highly resistant to pressure and wear, while seals in hydraulic systems require higher hydraulic performance. Size and Durability: The size of the seal must be accurately matched to the component to ensure effective sealing. Additionally, seal durability is crucial, as high-quality seals can maintain excellent sealing performance over long periods of operation. Focus Points for Distributors and Wholesalers For distributors and wholesalers, the following aspects are key when selecting robotic seals: Product Quality and Certification: The quality of seals directly impacts the overall performance of robots. Therefore, choosing high-quality, certified seals is essential. Supply Chain and Inventory Management: Distributors need to ensure timely supply and sufficient inventory of seals. A smooth supply chain and efficient inventory management can greatly enhance competitiveness. Cost Control and Pricing Strategy: While quality is critical, reasonable cost control and pricing strategies are also essential to gaining market share. Distributors should price products competitively while ensuring they provide high-quality seals. Seals play a vital role in the robotics industry, enhancing the performance and longevity of robots and providing reliable protection in various operating environments.

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As the new energy vehicle (NEV) industry continues to grow rapidly, the role of seals has become increasingly important in ensuring the efficiency and safety of these vehicles. Seals in NEVs are used to prevent contaminants such as water, dust, and dirt from entering critical components, as well as to provide functions like noise reduction, thermal insulation, and vibration dampening. While seals for doors and windows are common, NEVs also require a variety of other seals tailored to their unique operational needs. This article will explore the types of seals used in new energy vehicles, focusing on their functions in different parts of the vehicle. It will also discuss considerations for distributors and wholesalers looking to understand the seal market and its trends. Seals in the Power Battery System The power battery is one of the most critical components in a new energy vehicle, and the seals used in the battery system are crucial to ensuring the battery’s safety, performance, and longevity. Battery systems need seals that prevent moisture, dust, and other contaminants from entering, thus protecting against corrosion and damage. Common battery system seals include: Battery Pack Seals: These are used on the outer casing of the battery pack to prevent external moisture and dirt from infiltrating the pack. Battery Module Seals: These seals are used between individual modules inside the battery pack to ensure isolation and effective sealing of electrical components. Battery system seals are typically made from NBR (Nitrile Butadiene Rubber) or EPDM (Ethylene Propylene Diene Monomer) materials. These materials offer excellent resistance to weathering, chemicals, and thermal stress, ensuring that the seals perform reliably under the harsh conditions experienced inside battery systems. Seals in the Electric Motor System The electric motor is at the heart of a new energy vehicle’s propulsion system, and as such, the seals used in the motor must withstand extreme temperatures, pressure, and friction. Seals in the electric motor system primarily function to prevent dust, moisture, and contaminants from entering the motor and damaging its internal electrical components. Common electric motor seals include: Shaft Seals: These seals are placed around the rotating motor shaft to prevent the leakage of lubricants and entry of external contaminants. End Cover Seals: Located at the motor's end caps, these seals prevent the ingress of dust, moisture, and debris. Materials commonly used for motor seals include FKM (Fluoroelastomers) and VMQ (Silicone Rubber), as they offer superior heat resistance, oil resistance, and water resistance, which are critical for ensuring the performance and longevity of the motor. Seals for Charging Interfaces As electric vehicles (EVs) become more widespread, the charging infrastructure is just as important as the vehicle itself. Charging interface seals are crucial in ensuring the reliability and safety of the charging process. These seals help protect the connectors from contamination, and ensure the electrical components remain insulated and safe during charging. Common charging interface seals include: Charging Port Seals: These are used to seal the vehicle's charging port, preventing moisture and dirt from entering. Charging Connector Seals: These seals protect the connection between the charging cable and the vehicle, ensuring a reliable and safe electrical connection. Materials like EPDM (Ethylene Propylene Diene Monomer) and NBR (Nitrile Butadiene Rubber) are commonly used for charging interface seals, due to their excellent resistance to water, temperature variations, and exposure to various lubricants and chemicals. Seals in the Thermal Management System The thermal management system in an NEV is critical for maintaining the performance of the battery and electric motor by regulating their operating temperatures. Seals used in thermal management systems must withstand high temperatures and help maintain the integrity of coolant systems. Common thermal management seals include: Coolant System Seals: These seals are used to prevent coolant leaks in radiator and cooling pipe connections. Thermal Valve Seals: These are used in temperature control valves to prevent leakage and ensure smooth coolant flow. Seals for thermal management systems are typically made from Silicone Rubber (VMQ) and PTFE (Polytetrafluoroethylene), which are known for their excellent heat resistance and chemical inertness, ensuring the seals perform effectively in high-temperature environments. Common FAQs about Seals for New Energy Vehicles What are the key factors in selecting seals for new energy vehicles? When selecting seals for NEVs, key factors to consider include temperature resistance, chemical resistance, durability, and compatibility with various lubricants or coolants used in the vehicle. The specific location of the seal and its function also influence the choice of material. What are the current trends in the NEV seal market? With the rapid development of NEV technology, the demand for high- performance seals is increasing. Future trends in the NEV seal market will focus on materials that are more environmentally friendly, durable, and capable of withstanding extreme conditions. As battery technology advances, the need for robust seals in battery packs and electric motor systems will continue to rise. What should distributors consider when sourcing seals for new energy vehicles? Distributors should focus on the quality, performance, and stability of the seals. Understanding the specific requirements of different NEV systems and working with reliable suppliers to ensure the quality and longevity of the seals will help distributors provide optimal solutions to their customers. Seals are an essential component in ensuring the safe and efficient operation of new energy vehicles. From the power battery system to the electric motor, charging interfaces, and thermal management systems, seals play a vital role in preventing contamination, protecting sensitive components, and ensuring optimal performance.

Minimum Order: 1000

Gearbox oil seals are crucial components that ensure the efficient and reliable operation of gearboxes. Their primary role is to prevent oil leakage and protect the internal components from dirt, water, and other contaminants. However, the material selection for gearbox oil seals plays a significant role in determining their performance, durability, and ability to withstand harsh operating conditions. In this article, we will explore the various materials commonly used in the manufacturing of gearbox oil seals, highlighting their advantages and application areas. 1. Why Material Selection is Crucial for Gearbox Oil Seals Gearbox oil seals operate in a highly demanding environment, exposed to various stress factors such as high pressures, temperature fluctuations, and friction from the rotating shaft. The right material is essential for maintaining the integrity of the seal and ensuring long-term, trouble-free performance. The material chosen must exhibit excellent wear resistance, high-temperature stability, and chemical compatibility with the lubricants used in the gearbox. Choosing the wrong material can lead to premature failure of the seal, resulting in oil leakage, contamination, and ultimately, gearbox damage. This can result in costly repairs and downtime, which is why selecting the right material is critical for both manufacturers and those involved in the B2B distribution of oil seals. 2. Common Materials Used for Gearbox Oil Seals There are several materials used in the construction of gearbox oil seals, each with specific properties suited to different operating conditions. Below, we will discuss some of the most commonly used materials and their unique characteristics. 2.1 Nitrile Butadiene Rubber (NBR) Nitrile rubber, also known as NBR, is one of the most widely used materials for manufacturing gearbox oil seals. This material is well-regarded for its excellent resistance to petroleum-based oils and fuels, making it an ideal choice for sealing applications in gearboxes that use mineral oils. Advantages of NBR: Oil Resistance: NBR is highly resistant to a wide range of oils, greases, and hydraulic fluids. Wear Resistance: It offers good resistance to wear and abrasion, which is essential in gearbox applications where constant movement occurs. Cost-Effective: NBR seals are generally affordable, making them a popular choice for many industrial applications. However, NBR does have limitations. It is not suitable for high-temperature environments and is prone to degradation in the presence of high heat, making it less ideal for applications in gearboxes operating at elevated temperatures. 2.2 Fluoroelastomers (FKM) Fluoroelastomers, often referred to by the brand name Viton, are high- performance materials known for their exceptional resistance to high temperatures, oils, and chemicals. FKM is often used in more demanding gearbox applications, particularly in industries where extreme temperature fluctuations or exposure to aggressive chemicals is common. Advantages of FKM: High-Temperature Resistance: FKM can withstand continuous exposure to temperatures up to 200°C (392°F), and intermittent exposures to even higher temperatures. Chemical Resistance: It is highly resistant to a variety of chemicals, including acids, solvents, and oils, making it suitable for harsh environments. Durability: FKM oil seals offer excellent longevity, even in severe conditions, reducing the frequency of replacements. While FKM is highly durable, it is also more expensive compared to other materials like NBR, making it a choice primarily for high-end applications where reliability and performance are paramount. 2.3 Polyurethane (PU) Polyurethane is a synthetic polymer that offers a combination of high strength, flexibility, and resistance to abrasion. It is increasingly used in oil seals for gearboxes, particularly in industries where seals need to withstand high pressures and mechanical stress. Advantages of Polyurethane: Abrasion Resistance: PU is incredibly resistant to wear and tear, making it an ideal material for gearboxes that operate under high pressure. Flexibility: Despite its toughness, PU retains flexibility even in low temperatures, ensuring a reliable seal in fluctuating conditions. Resistant to Chemicals and Oils: Polyurethane seals exhibit good resistance to oils, fuels, and chemicals, which are often found in gearbox lubricants. However, while PU offers excellent performance in high-pressure and abrasive conditions, it is not as resistant to high temperatures as FKM and may degrade in extreme heat. 2.4 Polytetrafluoroethylene (PTFE) Polytetrafluoroethylene, commonly known as PTFE or Teflon, is a material known for its excellent chemical resistance and low friction properties. PTFE is often used in oil seals for gearboxes that require a high degree of chemical compatibility and low friction to reduce wear on both the seal and the shaft. Advantages of PTFE: Chemical Resistance: PTFE is resistant to virtually all chemicals, oils, and solvents, making it ideal for gearboxes that use aggressive fluids. Low Friction: PTFE offers very low friction, which helps to reduce the wear and tear on both the seal and the shaft. Temperature Resistance: PTFE can handle a wide range of temperatures, making it suitable for both high and low-temperature applications. The main drawback of PTFE is its relatively poor wear resistance compared to materials like polyurethane, making it less suitable for high-pressure applications unless combined with other materials. 3. Choosing the Right Material for Gearbox Oil Seals When selecting a material for gearbox oil seals, it is important to consider several factors, such as: Operating Temperature: Choose a material that can withstand the temperature range of your application. Lubricant Compatibility: Ensure the material is compatible with the lubricant used in the gearbox, whether it’s mineral oil, synthetic oil, or grease. Pressure and Load Conditions: If the gearbox operates under high pressure or load, consider materials with superior wear resistance, like polyurethane. Chemical Exposure: For gearboxes exposed to chemicals or aggressive fluids, materials like PTFE or FKM are ideal due to their chemical resistance. Choosing the right material for gearbox oil seals is a critical decision that can directly impact the performance and longevity of the gearbox. Materials like NBR, FKM, PU, and PTFE each offer unique advantages depending on the operating conditions and environmental factors. Understanding these materials’ properties and how they align with the gearbox’s needs can help you make an informed decision, whether you’re a manufacturer, distributor, or wholesaler in the sealing industry.

Minimum Order: 1000

When it comes to maintaining the optimal performance of industrial machinery, the role of gearbox oil seals cannot be overstated. These small components are often the unsung heroes, keeping vital lubricants in place while preventing contaminants from entering. Given their importance, it is crucial to select the right material for a gearbox oil seal, as the material directly impacts the seal's effectiveness and longevity. Over the years, I've seen how different materials perform under various conditions, and in this article, I'll provide a deep dive into the key materials used for gearbox oil seals and share practical insights on how to choose the right one for your application. Understanding the Role of Gearbox Oil Seals A gearbox oil seal serves two primary functions: to contain the lubricant inside the gearbox and to keep external elements like dirt, moisture, or contaminants out. If the seal fails, the gearbox can experience oil leakage, overheating, increased friction, and ultimately, failure. To perform their function reliably, oil seals need to withstand high speeds, pressure, and temperatures without losing their elasticity or strength. So, the material used for an oil seal must match the specific operating conditions it will be exposed to. Key Materials for Gearbox Oil Seals Over the years, I've worked with various oil seal materials, each offering unique advantages based on the working environment. Here’s a breakdown of the most commonly used materials for gearbox oil seals: Nitrile Rubber (NBR) Nitrile rubber is one of the most commonly used materials for oil seals, thanks to its excellent resistance to oil, grease, and fuel. It performs well in moderate temperatures and pressure conditions, making it a go-to for standard gearbox applications. However, it is less suited for high-temperature environments or chemical exposure. Fluoroelastomer (FKM) When the operating conditions are more extreme—particularly in high- temperature environments—fluoroelastomer (FKM) becomes the material of choice. FKM offers exceptional resistance to heat, oil, and chemicals, making it ideal for gearboxes operating at elevated temperatures or with aggressive fluids. It can easily withstand temperatures from -30°C to +250°C, making it versatile for various industrial applications. Polytetrafluoroethylene (PTFE) PTFE is often chosen for its outstanding chemical resistance and low friction properties. It’s particularly beneficial for gearboxes that require tight seals in highly corrosive environments or with specialized lubricants. PTFE seals are also very effective in extreme temperatures, operating smoothly up to 250°C. The material’s low friction helps reduce wear and energy loss, providing a longer lifespan for machinery. Silicone Rubber (VMQ) Silicone rubber is favored for its high-temperature stability, flexibility, and resistance to aging, making it suitable for gearboxes in environments where high temperatures are a concern. However, it’s not as resistant to oils and fuels as other materials like NBR or FKM. Silicone is more commonly used in less demanding applications or where sealing is required for a broader range of temperatures. Polyurethane (PU) Polyurethane offers excellent wear resistance and is perfect for high-load, high-speed applications. It’s used in gearboxes where the seal needs to handle heavy pressure and high-frequency movements. Polyurethane oil seals have excellent abrasion resistance, which makes them ideal for long-lasting performance in demanding environments. Selecting the Right Material: What to Consider Choosing the right material for a gearbox oil seal is not just about picking the most durable option—it’s about selecting the one that matches the specific needs of your application. Here are a few key factors to consider when making this decision: Temperature: If the gearbox operates in a high-temperature environment, materials like FKM or PTFE are best. These materials maintain their elasticity and sealing properties even under extreme heat. Lubricant Compatibility: Different lubricants can affect the performance of certain seal materials. For example, NBR works well with petroleum-based oils, while FKM is better suited for synthetic oils and chemical applications. Pressure and Speed: In high-pressure or high-speed conditions, materials like polyurethane or PTFE are ideal due to their excellent resistance to mechanical stress and wear. Environmental Conditions: If the gearbox is exposed to corrosive elements or harsh chemicals, PTFE or FKM will offer better protection, as these materials are highly resistant to chemical attack. How NQKSF Oil Seals Stand Out As someone who has worked in the sealing industry for over 30 years, I’ve seen first-hand how essential it is to have a reliable supplier. NQKSF stands out for its comprehensive approach to sealing solutions. Here’s why many in the industry turn to NQKSF for their oil seal needs: Extensive Inventory and Fast Delivery NQKSF stocks over 10,000 different standard seal sizes, ensuring that you can get the parts you need quickly, without having to wait for custom production. This is especially important for urgent replacements. Tailored Seal Solutions For unique operational environments, NQKSF offers custom seal solutions that are tailored to your specific requirements. From material selection to design and testing, NQKSF ensures that your seals are perfectly matched to the working conditions of your machinery. Expertise in Sealing Systems With more than 30 years of experience, NQKSF’s technical team works closely with customers to optimize sealing systems, improve performance, reduce maintenance costs, and extend the life of the equipment. This kind of expertise can make all the difference in the long-term reliability of your gearboxes. Choosing the right material for gearbox oil seals isn’t just about ensuring the seal does its job—it’s about enhancing the overall performance and longevity of the gearbox. By selecting a material that can withstand the specific demands of your operational environment, you can prevent costly downtime, extend service life, and reduce maintenance costs.

Minimum Order: 1000

In the world of industrial machinery, automotive systems, and heavy equipment, oil seals are often overlooked until a failure occurs. Yet for distributors and wholesalers, the choice between ordinary seals and high‑quality oil seals is not simply a technical matter—it is a business decision that influences reputation, customer loyalty, and long‑term profitability. Understanding the advantages of premium oil seals helps stakeholders position themselves more effectively in a competitive market. Why Quality Matters in Oil Seals Oil seals serve as the frontline defense against leakage and contamination. They protect bearings, gears, and shafts from premature wear, ensuring that lubricants remain where they belong. A seal that fails compromises the entire system, leading to downtime, repair costs, and dissatisfied customers. High‑quality oil seals, produced with advanced materials and precise manufacturing standards, minimize these risks and deliver consistent performance across diverse applications. Key Advantages of High‑Quality Oil Seals 1. Extended Service Life Premium seals are engineered to withstand demanding environments. Whether exposed to high rotational speeds, fluctuating temperatures, or abrasive contaminants, they maintain integrity longer than standard alternatives. For distributors, this translates into fewer warranty claims and stronger trust from clients. 2. Superior Material Performance High‑quality seals often use advanced elastomers such as fluoroelastomers (FKM) or PTFE blends. These compounds resist chemical attack, tolerate extreme temperatures, and reduce friction. The result is a seal that performs reliably in industries ranging from automotive transmissions to chemical processing equipment. 3. Reduced Maintenance Costs When seals last longer, maintenance intervals can be extended. For wholesalers supplying to factories or fleet operators, this advantage is significant. Customers appreciate products that lower total cost of ownership, and suppliers who provide them gain a competitive edge. 4. Consistent Fit and Installation Precision manufacturing ensures that high‑quality seals fit correctly without distortion. This reduces installation errors and minimizes the risk of early leakage. Distributors benefit from fewer complaints and smoother customer experiences. 5. Enhanced Reputation for Reliability Supplying premium seals positions wholesalers as trusted partners. In industries where downtime is costly, reliability becomes a selling point. By offering seals that consistently perform, distributors strengthen their brand image and encourage repeat business. Questions Distributors Often Ask Q1: Do high‑quality oil seals justify their higher price? Yes. While the upfront cost is greater, the reduction in failures, downtime, and maintenance expenses offsets the investment. Customers quickly recognize the value when equipment runs longer without interruption. Q2: How can wholesalers convince buyers to choose premium seals? Education is key. Demonstrating case studies, highlighting reduced replacement frequency, and emphasizing total cost savings help buyers see beyond initial price. Many successful distributors provide technical support and training to reinforce the benefits. Q3: How do premium seals affect long‑term partnerships? Supplying reliable products builds trust. Clients who experience fewer failures are more likely to continue sourcing from the same distributor. Over time, this strengthens business relationships and stabilizes revenue streams. Perspectives from the Supply Chain For wholesalers, the advantages of high‑quality oil seals extend beyond technical performance. They influence inventory management, customer service, and market positioning: Inventory Stability: Premium seals reduce emergency orders caused by unexpected failures. Customer Retention: Buyers who experience fewer breakdowns are less likely to switch suppliers. Market Differentiation: Offering high‑quality seals distinguishes distributors from competitors relying on low‑cost imports. After‑Sales Support: Providing technical guidance enhances credibility and adds value beyond the product itself. Looking Ahead: Trends in High‑Quality Seals Global manufacturers are investing in innovations that further enhance seal performance: Eco‑friendly Materials: Elastomers with reduced environmental impact are gaining traction. Advanced Lip Designs: Optimized geometries reduce friction and improve sealing efficiency. Smart Monitoring: Integration of sensors to detect wear or leakage is emerging in high‑end applications. Customization for OEMs: Tailored solutions allow equipment makers to differentiate their products. For wholesalers, staying informed about these trends ensures they remain relevant and competitive. The advantages of using high‑quality oil seals extend far beyond technical specifications. They safeguard machinery, reduce maintenance costs, and strengthen trust between suppliers and customers. For distributors and wholesalers, offering premium seals is not simply about selling a product— it is about delivering reliability, protecting reputations, and building long‑term partnerships.

Minimum Order: 1000