Mechanical Hardware

Introducing our top-of-the-line Industrial Applications Skeleton Oil Seal Custom Rubber Coated TG4 Oil Seals with Metal Reinforcement! Our oil seals are designed to provide superior performance and durability in industrial applications. Whether you are in the automotive, aerospace, or manufacturing industry, our oil seals are the perfect solution for your sealing needs. Our oil seals are custom-designed to meet the specific requirements of your application. We offer a wide range of sizes and materials to ensure that you get the perfect fit for your equipment. Our custom rubber coating provides a tight seal that prevents leaks and contamination, while the metal reinforcement adds extra strength and stability. At our company, we take pride in delivering high-quality products that exceed our customers' expectations. Our oil seals are manufactured to the highest standards using state-of-the-art technology and premium materials. We are committed to providing reliable and long-lasting solutions for our customers' sealing needs. In addition to our exceptional product quality, we also offer excellent customer service. Our team of experts is dedicated to providing you with the support and assistance you need to find the right oil seal for your application. We are here to answer your questions, provide technical advice, and ensure that you have a seamless experience with our products. Don't settle for inferior oil seals that compromise the performance and reliability of your equipment. Choose our Industrial Applications Skeleton Oil Seal Custom Rubber Coated TG4 Oil Seals with Metal Reinforcement for unmatched quality and performance. Contact us today to learn more about our products and how we can help you find the perfect sealing solution for your industrial application.

Minimum Order: 500

In the realm of mechanical sealing, consistency and durability are key—not just for performance, but for the long-term integrity of entire systems. The TC skeleton oil seal series has become a go-to solution for professionals seeking reliable sealing in rotating shaft applications, particularly where dual-lip designs and compact structure are essential. This series features a dual-lip configuration, with the primary lip preventing lubricant leakage and the secondary lip offering effective protection against dust, dirt, and other external contaminants. Reinforced with an internal metal skeleton, the TC oil seal delivers a stable fit and sustained sealing pressure, even under demanding operating conditions. Application-Specific Engineering Designed to operate in environments with continuous rotation, moderate pressure, and fluctuating temperatures, the TC oil seal series is widely applied in: Motors and pumps Industrial gearboxes and speed reducers Combustion engines (light-duty and industrial) Hydraulic systems Construction equipment Agricultural machinery Wind turbines and power transmission units Automotive transmissions and heavy trucks Mechanical arms and automation systems These applications demand not only resistance to oil, grease, and environmental factors, but also long-term dimensional stability under radial load. The materials used—typically NBR, FKM, or ACM elastomers—are selected based on temperature range, chemical compatibility, and rotational speed. Built on Manufacturing Excellence NQKSF is a dedicated manufacturing facility specializing in precision sealing technology. With over 30 years of industry experience, our team provides more than just product delivery—we offer full-spectrum support to meet evolving industrial challenges. What sets us apart:

Minimum Order: 500

P New Non-clogging Sewage self-priming pump with open impeller P type non-clogging self-priming sewage pump is suitable for municipal sewage and industrial wastewater treatment engineering, as well as all kinds of wastewater classification treatment and centralized treatment system. It is the king of self-priming sewage pump as the most ideal of the new generation of sewage pump Application: Used to handle non-flammable, explosive liquids Rainwater and general sewage Municipal sewage engineering, construction site, civil air defense system drainage station Light industry, paper making, textile, food, chemical, electrical, mining and other industrial wastewater Sewage discharges in residential areas Sewage and sediment from water purification systems Leather industry, slaughterhouse sewage, pond aquaculture Brewing and sugar Discharge of sewage that is not highly corrosive but has been seriously polluted. Open impeller, no clogging Self-priming performance, Self Priming Sewage Pump with inspection Cover/Maintenance Hole

Minimum Order: 1 bags

Coolant pump for small CNC machine tool / Vertical Submersible multistage centrifugal pump QDYB series are multi-stage centrifugal pumps equipped with standard motors. Motor shaft and pump shaft are integrated and directly connected. The pump can be equipped with intelligent protector as required to effectively protect the pump from dry rotation, phase loss and overloading etc. The filter hollow ring around the inlet section of the base can filter large sundries. The outlet section of cast iron is processed with black electrophoretic paint. The pump is suitable for low viscosity, neutral, non-explosive liquids which does not contain solid material or fiber. the conveyed liquid should not be chemically corrosive to the pump material. Temperature: -15 degree Celsius to 104 degree Celsius Flow range: 1-7m3/h Pressure: 3.6bar Medium PH value: PH5-9 Motor: Fully closed/air cooled motor /2poles/2900rpm/extended shaft aluminum housing motor, /IP55/F/3*380/220V/50HZ The immersible depth of the pump can be customized according to the liquid depth of the user's water tank. Application: The pump is used for conveying machine coolant, lubricating fluid, condensed water, industrial cleaning equipment and other immersion occasions, such as electric spark, chip removal machine, grinding machine, machining center, cooling device, filtration system and so on

Minimum Order: 1 bags

In modern industrial systems, sealing reliability is a key factor in ensuring operational stability, particularly in environments where pressure, temperature, and chemical resistance intersect. One solution that has gained attention across sectors such as automotive, hydraulic, and petrochemical is the Combination Gasket Seal—a component that integrates metal and elastomer materials to provide multi-functional sealing performance. Rather than relying on single-material gaskets, Bonded Seals are designed to offer both structural support and flexible sealing in a single unit. Typically, these products consist of a metal washer or frame—often carbon steel, stainless steel, or brass—bonded to a layer of rubber material like NBR (nitrile rubber), FKM (fluoroelastomer), or EPDM, depending on the medium and environment. Where Are Combination Gasket Seals Used? These seals are commonly used in: Hydraulic pipe connections, especially in mobile equipment or compact manifolds Automotive fluid systems, including fuel injection components and transmission housing High-pressure gas systems where vibration or surface irregularities may cause conventional seals to fail Oil and gas flange interfaces that require both sealing and mechanical retention Their versatility makes them a suitable choice for sealing static interfaces that must remain leak-free under pressure without relying on external sealing compounds. Key Benefits and Performance Features Dual-sealing capability: The metal component ensures stability and pressure resistance, while the rubber layer provides conformity and adaptability to surface imperfections. Easy installation: Most combination gasket seals are designed for drop-in use, eliminating the need for additional sealants or surface preparation. Material flexibility: Manufacturers can select rubber grades tailored for oil, fuel, water, or aggressive chemicals, offering compatibility across various industries. Temperature tolerance: Depending on the elastomer used, seals can operate in a wide temperature range with minimal performance degradation. Reduced maintenance: A proper combination seal reduces the likelihood of leaks over time, lowering maintenance needs and replacement frequency. Customization and Quality Control Many Chinese and international manufacturers now offer custom-designed combination gaskets for specific pressure ratings, flange sizes, or material requirements. Whether the client needs a specific durometer hardness, thickness, or groove fitment, custom production is often available after prototype validation. During manufacturing, strict quality control procedures—including dimensional inspections, material tests, and compression set analysis—are conducted to ensure product consistency and performance integrity.

Minimum Order: 1000

Sulfuric acid transfer pump: Concentrated /thick Sulfuric acid pump Concentrated sulfuric acid pump on the market are mainly fluorine plastic pump (F46) and cast iron pump, cast iron pump advantage is cheap, suitable for conveying high concentration of concentrated sulfuric acid; But if the occurrence of dilute sulfuric acid (sulfuric acid concentration decreased), cast iron is not resistant to dilute sulfuric acid corrosion will appear damage. The advantage of fluorine plastic pump is suitable for conveying arbitrary concentration of sulfuric acid, a wider range of application; The disadvantage is that the price cost is higher than cast iron pump. Dilute sulphuric acid pump At present, the main engineering plastic horizontal pump and steel lining plastic horizontal pump are widely used in China. Ultra high molecular weight polyethylene (UHMWPE) is used to make the flow parts of engineering plastic pump and steel plastic lining pump, which has excellent corrosion resistance, abrasion resistance and impact resistance. Dilute sulfuric acid pump is usually horizontal, single stage, single suction, bracket type centrifugal pump, suitable for the temperature of -20 to 100 degree celsius. The seal of the pump adopts mechanical seal, dynamic seal and packing seal and other sealing forms, which can not only transport dilute sulphuric acid clear liquid, but also transport slurry containing solid particles and wastewater containing various impurities.

Minimum Order: 1 bags

Double entry twin screw pump Double-entry twin screw pump is composed of a power rotor and an idler rotor, whose inter-meshing helix will work with pump casing or housing to form constant-volume sealing chamber. With the rotating of the rotors, medium will enter the casing before being pumped to the pump outlet. Thus the medium delivery is achieved. This pump is with compact structure, stable flow rate without pulsation, reliable operation, available for high speed, low noise, small vibration, high efficiency, long service life, strong self-priming ability and son on, and the twin screw pump can be widely applied in metallurgy, petroleum, chemical, power, transportation, building materials, marine etc. Application Petroleum industry Oil-gas mixture transfer, high viscosity crude oil, polymer, various product oils, etc. Petrochemical industry Lubrication oil, crude oil, heavy oil /HFO, residual oil, asphalt, fuel oil, light dydrocarbon, butadiene, gasoline, kerosene, phenol, etc. Chemical industry Acid, alkali, salt solution, resin, glycerol, paraffin, rubber solution, high polymer, cosmetics emulsion medium etc. Food industry Honey, syrup, animal oil, vegetable oil, etc. Storage and transfer industry Wharf product oil transfer pump, oil ship pump, departing pump, uploading pump, backflow pump, oil reservoir unloading and transfer pump etc. Shipbuilding industry Delivery pump of refined oil, fuel oil, refined asphalt, waste oil, sump oil, etc. cargo oil pump, booster pump, stripping pump, pipeline blow pump etc. Energy industry Heavy oil, fuel oil transportation, lubrication oil, coal water slurry, coal tar, residual oil etc.

Minimum Order: 1 bags

In the automotive industry, where mechanical systems must operate under pressure, friction, and fluctuating temperatures, the reliability of oil seals is vital. Chinese seal factories have become trusted partners in supplying durable automotive oil seals to manufacturers and aftermarket clients across the globe. Rather than focusing solely on price competitiveness, many Chinese seal producers have shifted their attention to material integrity, product design, and long-term sealing performance. Oil seals manufactured for automotive use are designed to maintain lubrication inside critical engine components such as crankshafts, camshafts, and gearboxes, while simultaneously preventing the ingress of dust, water, and contaminants. Key materials often include nitrile rubber (NBR) for standard temperature applications, fluoroelastomer (FKM) for high-heat environments, and silicone for specialized functions. These materials are typically reinforced with stainless steel or carbon-steel frameworks, and in some cases, spring-loaded sealing lips are integrated to ensure consistent radial force. Chinese factories also employ advanced molding technology and precision machining for custom fitment. Whether the application involves passenger cars, trucks, or heavy-duty engines, seal manufacturers provide tailored solutions to meet specific engine configurations and performance expectations. Additionally, international clients benefit from flexible production volumes, responsive technical support, and adherence to international standards such as ISO/TS 16949. With increasing attention to quality and lifecycle value, China’s seal factories are positioning themselves as reliable suppliers in a globally competitive auto parts sector.

Minimum Order: 100

In the global automotive supply chain, the demand for high-quality engine oil seals continues to rise. These critical components play a pivotal role in maintaining the efficiency and cleanliness of internal combustion engines by preventing oil leakage and contamination. As the auto industry grows increasingly cost-sensitive yet performance-focused, many international buyers have turned to Chinese oil seal manufacturers for consistent and adaptable supply solutions. Among these suppliers, manufacturers with a focus on precision engineering and material integrity have proven capable of meeting the evolving needs of both OEMs and aftermarket distributors. Understanding the Function of Engine Oil Seals An engine oil seal, typically located around the crankshaft or camshaft, must handle high temperatures, continuous motion, and varying pressure levels. It is not only expected to retain lubricants inside the engine but also to block out contaminants such as dust, moisture, and road debris. To achieve this, materials such as nitrile rubber (NBR), fluoroelastomer (FKM), or silicone rubber are used—each selected based on the performance environment of the vehicle. The inner structure may also include metal reinforcement and spring-loaded lips to enhance sealing force and durability over time. What Chinese Manufacturers Offer Chinese oil seal factories have advanced significantly over the past decade, moving from standard replication to custom design, rapid prototyping, and material innovation. For international buyers, this means access to: Wide compatibility: Oil seals compatible with various car brands including Japanese, European, and American models Multiple material options: Selection based on temperature resistance, chemical compatibility, and application type Stable production capacity: Suitable for both mass production and specialized batch requirements Global shipment support: Compliance with export packaging, labeling, and certification norms Some factories also provide technical drawings, sample evaluation, and third- party test reports, especially when working with clients in regulated markets. Automotive Applications Covered Oil seals manufactured in China are used across various engine-related systems, including: Crankshaft front and rear oil seals Camshaft oil seals Valve stem seals Timing cover seals Auxiliary drive and pump system seals Each application may demand different design geometries and material specifications, which manufacturers accommodate using CAD-based mold development and in-house compounding capabilities. Collaboration and Quality Control For many international customers, the primary concern is not cost but consistency and communication. Reputable Chinese manufacturers address this by offering: ISO-certified quality systems Pre-shipment inspection protocols On-site testing for compression set, hardness, and aging resistance Responsive communication in English and other languages This makes it easier for buyers to manage long-distance sourcing while maintaining visibility into their supply chain performance. China oil seal manufacturing sector has become an integral part of the global automotive parts network. By offering customized solutions, material variety, and flexible production capabilities, Chinese manufacturers contribute to the efficient operation of modern engines across continents. For companies seeking reliable sources of automotive engine oil seals, partnering with a professional Chinese supplier may present both technical and logistical advantages—especially when collaboration and precision are prioritized alongside affordability.

Minimum Order: 100

Surface centrifugal pump Surface water pump refers to a pumping device installed on the ground, whose main function is to pump groundwater, river water, lake water, etc. to household, agricultural, and industrial purposes. Compared to submersible water pumps, surface water pumps are simpler to install and more convenient to use. The structure of the surface water pump may also vary depending on the usage situation. Structure of surface water pump The ground water pump mainly consists of a motor, casing, impeller, mechanical seal, coupling, bracket, and other parts. The motor and casing are the main supporting parts of the surface water pump, the impeller is the key part of the pump water, the mechanical seal is very important for the pump water seal, and the coupling plays a transmission role. The bracket is designed to ensure the stability and safety of the ground water pump. Usage of surface water pumps The use of surface water pumps is very simple. Firstly, choose a suitable installation location, preferably a flat and close ground to the water source. Then follow the instructions to install the ground water pump, connect the power supply and inlet/outlet, and finally turn on the power supply. Maintenance of ground water pumps The surface water pump needs regular maintenance during use to ensure its normal operation. Specifically, it includes the following aspects: 1. Regularly check whether the motor and casing of the surface water pump are loose or damaged; 2. Regularly clean the inlet and outlet of the surface water pump to prevent pump holes from being blocked; 3. Regularly replace the mechanical seal to ensure the water seal of the pump; 4. Regularly inspect the impeller and coupling of the surface water pump for any abnormalities; If the ground water pump is not used for a long time, it should be dismantled, cleaned, and stored in a dustproof and moisture-proof manner in a timely manner. Vertical or horizontal structure Close coupled type or shaft coupled type Centrifugal or self- priming etc. Pump material: metal (cast iron, stainless steel, duplex stainless steel etc), plastic (polypropylene/PP, fluoroplastic /F46/FEP/PTFE/PVDF etc.) Pump is widely used in industries to transfer /pump different fluids/liquids

Minimum Order: 1 bags

This Mile Marker Hydraulic Winch Adapter kit for Mile Marker Series-H hydraulic winches includes everything you need to tap into an existing power-steering system (except for a power steering pump) and pull non-stop. What's Included (1) Remote control All hoses and fittings Power cables Control valve Power steering pump adapter Features + Benefits Remote with 12ft.L lead Rated to 7 GPM Power steering pump not included Key Specs Item# 19176 Brand Mile Marker Manufacturer's Warranty 24 months limited parts / No labor Ship Weight 17.0 lbs Application Adapter kit Works With Series H-winches Amps 2

Minimum Order: 1 bags

Domestic submersible sewage pump single phase motor The pump is driven by 220-240V, 50HZ, Single phase motor and equipped with the impeller single flow channel or double flow channels. The pump is suitable to pump the liquids containing short fiber, paper scraps, sand and other solid particles or soft solid, such as mud water, gray water, domestic wastewater, feces and urine, etc. It is widely used for agricultural drainage and irrigation, river dredging Single- phase submersible sewage pump can be equipped with automatic safety protection controller according to the demands such as water leakage, electricity leakage, overload and high temperature protection, to ensure the safety and reliability of the pump. Pump, motor, mechanical seal, O-ring etc. The pump is ok to match floating switch (liquid level control)

Minimum Order: 1 bags

DLY vertical immersible multi-stage centrifugal oil pump is a special type of multi-stage centrifugal pump. It is widely used in oil production plants, refineries, power plants, to convey the oils (Crude oil, gasoline, diesel oil). Scope of performance Flow rate: Q: 6-150m3/h Head: H: 15 to 600m Temperature: T: -40 degree Celsius to 80 degree Celsius. Viscosity: δ ≤ 200CST (centistoke) Special working conditions, can be designed separately Structural characteristics of This series pump is a segmented vertical multistage centrifugal oil pump. The motor adopts vertical explosion-proof type, which rotates counterclockwise from the motor end. The medium is sucked axially from the bottom and spit out horizontally. Easy to install, it is suitable for outdoor installation. The axial force is mainly borne by the balance drum, and the thrust ball bearing is set to balance the residual axial force. The shaft seal adopts labyrinth throttling decompression and packing seal to ensure no leakage at the sealing place. A small amount of liquid is discharged from the overflow pipe back to the suction tank. Vertical explosion-proof motor with EXdIIBT4 explosion-proof grade is adopted, which has excellent explosion-proof performance. It can work in oil tanks without building pump room and can be used outdoors. Significantly reduce infrastructure investment and operating costs. Bronze impeller is immersible in liquids. No irrigation pump is required to start. Pump shaft seal adopts excellent mechanical seal. Pump and motor is for the direct transmission by elastic shaft coupling.

Minimum Order: 1 bags

Sea water centrifugal pump (shaft coupling type) Pump materials: bronze CLH series vertical centrifugal marine pump is used in all kinds of shipping and warship as ballast pump, bilge pump, coolant pump, drainage pump and fire pump. It is also used as necessary feed pump for seawater desalting device and various tank equipment, and the booster pump for petroleum and chemical industry pipelines, cold and hot water circulating system and high-rise building living water supply system. Model Explanation CLH25-25-6.5 CLH-Marine vertical sea water pump 25-Inlet diameter 25mm 25-Outlet diameter 25mm 6.5-Pump speed divided 10

Minimum Order: 1 bags