Mechanical Hardware

The Y type globe valve design reduces the flow resistance of the to a minimum. The bellow seal valves non-rotating stem results in lower friction of all moving parts and longer stem packing life.  Y type bellows seal globe valve advantage Why are Y type bellows seal globe valve less popular than normal bellow seal globe valve？ 1. They are all bellows seal globe valve bellow seal globe valves with double seals (bellows +padding), normal globe valve only have padding seal. But their body design is different, Y type bellow sealed globe valve body more better for flow control. It has no flow loss，but a little expensive than normal bellow seal globe valve. 2. Disc with scraping effect, so y type globe valve has a longer service life. 3. The inside seals bellows are all made by stainless steel 321, which is more corrosion resistant and have a longer service life. 4. Y type bellow seal globe valves are lighter than normal globe valve in open and off. Applications: steam system, hot oil system, hot and cold water system etc. Technical specification Face to face: DIN3202 Flange ends: DIN2543-2546 Design standard: DIN Test& inspection: DIN3230

YB electric vane oil pump 220V electric diesel oil pump, kerosene oil pump is vane pump and equipped with mechanical seal. The pump is built-in with 100 micron filter which is easy to clean and flood valve. The pump body is made of cast iron with corrosion resistant coating and driven by Cast aluminum motor (IP54/220V/50HZ/1Phase/AC). Metal impeller is with 5 pcs vanes. The 220v oil pump is mainly used for refueling and conveying of mining machinery, generator sets and other consumption equipment, fishing boats, pleasure boats and small refueling points, especially for the conveying of diesel oil and kerosene oil etc. YB oil pump has the advantages of good self-priming performance, high lift, small volume, easy to carry etc.

Minimum Order: 1 bags

In hydraulic equipment and industrial automation systems, the stability of the entire system depends on various factors. However, there is one component that requires low investment and is easy to replace—this is the UN-type rod seal we are going to explore today. What is a UN Seal? UN seal (also known as a U-cup or U-type seal) is a versatile sealing component that can be installed on either piston rods or pistons. It features a distinctive “U” shaped profile, with both the inner and outer sealing lips specifically designed to optimize sealing performance in rod and piston applications. Material Selection and Structural Advantages To meet diverse sealing demands across different working conditions, DEDE offers this series in two material options: Polyurethane (PU) and Fluororubber (FKM). PU Material: Often referred to as the “fifth engineering plastic,” polyurethane combines the elasticity of rubber with the durability of plastic. It offers excellent wear resistance, tear strength, and chemical stability. Even under high-frequency motion and low compression set conditions, it maintains reliable sealing performance. With an operating temperature range of -20°C to +120°C, PU seals are well-suited for variable outdoor and industrial environments. FKM Material: Known for its exceptional resistance to high temperatures and oils, FKM is ideal for harsh chemical environments and high-temperature, high- pressure conditions. It is particularly suitable for high-vacuum systems, oil- filled systems, or applications requiring stringent media compatibility—such as hydraulic pumps and turbine sealing systems. Key Features and Application Adaptability The UN-type rod seal series offers the following advantages: High compatibility with both dynamic and static sealing in medium to high- pressure hydraulic systems; Precision lip design ensures low friction and stable oil return; Automatically enhances sealing performance as pressure increases, preventing leakage; Can be used in conjunction with dust wipers to significantly extend system lifespan. Thanks to these advantages, UN-type rod seals have become vital components in ensuring long-term operational stability across a wide range of equipment, including industrial hydraulic cylinders, automotive hydraulic power steering systems, electromechanical arms, and agricultural machinery hydraulic systems. Application Industries Construction Machinery: Hydraulic cylinder sealing systems in excavators, bulldozers, etc.; Automation Equipment: Sealing control at actuator ends in robots and mechanical arms; Industrial Equipment: Hydraulic presses, punching machines, CNC machinery; Automotive Industry: Rod seals used in power steering and transmission systems; Energy Equipment: Hydraulic regulation systems in wind power installations. By continuously optimizing material selection and refining manufacturing processes, DEDE has ensured that the UN series offers outstanding durability and low maintenance costs. DEDE's Service and Technical Support With over 30 years of manufacturing experience, DEDE is a well-established sealing systems provider with its own production facilities and a global supply and service network spanning more than 80 countries. Our key service strengths include: Fast delivery of standard parts: Covering tens of thousands of specifications to quickly meet customer demands; Customized sealing solutions: End-to-end services from structural design and material formulation to on-site testing; Sealing performance optimization: An experienced engineering team helps customers reduce maintenance frequency and extend service life. Additionally, DEDE is recognized as a provincial-level "Specialized and Innovative" enterprise and a national high-tech enterprise, making it a benchmark brand in intelligent manufacturing and technological innovation within the sealing industry. Why Choose DEDE’s UN Seal Series? Though small in size, sealing components are critical to the stable operation of systems. In high-frequency motion, high-pressure circuits, and harsh chemical environments, DEDE’s UN seal series delivers outstanding performance and versatile applicability—offering solid protection for reliable equipment operation. We don’t just sell seals—we deliver dependable sealing solutions. If you’re facing complex sealing challenges, feel free to contact us for technical advice or customized solutions.

Minimum Order: 500

Seals play a crucial role in hydraulic systems. U-shaped seals made of polyurethane (PU) and fluororubber (FKM) perform particularly well in high- intensity environments, such as those found in construction machinery, motors, and industrial robots. Why choose polyurethane (PU) and fluororubber (FKM)? Polyurethane is known in the industry as the "fifth plastic" because it combines the properties of both plastic and rubber. Honestly, traditional rubber often quickly breaks down in acidic and alkaline environments or when exposed to organic solvents, while PU offers far greater resistance. Its elasticity and toughness prevent deformation and aging even after extended use, ensuring a stable seal. Fluororubber is highly chemically stable, offering resistance to high temperatures, oils, high vacuum, acids, alkalis, and a variety of chemicals. It also boasts relatively good media resistance among elastomers. NQKSF is U-shaped piston seal series, designed specifically for hydraulic systems, can withstand temperature fluctuations from -20°C to 250°C, making it suitable for a variety of complex environments. More importantly, as oil pressure increases, its sealing force automatically strengthens, significantly reducing leakage. Application Scenarios and Industry Demands Speaking of their applications, U-shaped piston seals are used across a wide range of industries. Industrial machinery, especially pumps and hydraulic cylinders, places stringent demands on seals. Seals in motors, gearboxes, and engines also require both high-pressure and wear resistance. Agricultural and construction machinery often operate in harsh environments, making U-shaped seals' corrosion resistance and compression resistance an excellent choice. Of course, industries like water treatment, wind power generation, and the chemical industry also place extremely high demands on seal stability and durability. NQKSF has accumulated extensive experience in the sealing field over many years, exporting its products to over 80 countries and earning widespread recognition. NQKSF is Service Advantages NQKSF is backed by a physical factory and over 30 years of manufacturing experience. We offer a comprehensive inventory of O-rings and oil seals, enabling us to quickly respond to urgent customer needs. NQKSF offers comprehensive, customized services, from material selection and structural design to testing, to address sealing challenges in diverse operating conditions. Our technical team helps customers optimize sealing performance, reducing equipment maintenance costs and extending service life. Long-term customers report that NQKSF is products are stable and reliable, with excellent after- sales service. U-type piston seals, particularly NQKSF is, are a wise choice for many industry customers seeking to improve equipment stability and operational efficiency. While small, these seals are crucial to the health of the entire system. Whether in high-pressure hydraulic systems or harsh industrial environments, U- type piston seals demonstrate their unique advantages. For more details, please contact us or leave us a message, and we'll promptly respond.

Minimum Order: 500

I still remember the first time I saw a hydraulic cylinder fail on a steel plant line. The rod looked clean. The parts looked fine. But the fabric- reinforced V-packing set had worn out. That got me thinking—this isn’t a weak seal, it’s just stressed beyond limits. Why Fabric Reinforced V-Packings? Here’s the deal: you have high-pressure, frequent reciprocating motion, sometimes dirty hydraulic oil. Standard V-ring or O-ring won’t cut it. That’s when fabric-reinforced V-packing sets, with canvas backing and rubber lip, makes sense. At DEDE, we offer exactly that. Most importantly, we’ve based our designs on real failure modes. You pick material (like canvas + NBR, or canvas + FKM), and adjust ring count based on pressure. Works up to 40 MPa reliably. Real Use Cases We’ve Seen · Mining rigs—harsh dirt and high load cycles. Our canvas stack cut replacement from once per month to quarterly. · Metaller hydraulic cylinders—vibration from presses. Complaints dropped after switch. · Oilfield pumps—pressure spikes. PEEK/PTFE reinforced stacks gave seal life from weeks to half a year. The Stack Structure Matters, let me break it down: Top is male adapter, then 3–7 V-rings (fabric-reinforced rubber), bottom is female adapter. When pressure mounts, the female adapter pushes down. Each ring expands outward. Sealing happens progressively. First ring takes most stress. Leaks reduce as it passes through next ring. If you need tighter seal, add another ring. Too much friction? Remove one. It’s field-adjustable. Perfect for maintenance teams. We offer multiple compounds: · Canvas + NBR — good for mineral hydraulic oil, standard systems. · Canvas + FKM — chemical resistant, ideal where oil contains additives. Choice depends on fluid, stroke speed, temperature, alignment. We help match it all through technical review. Why Use DEDE is Approach · Immediate shipping on stock of over 10,000 seal specs (V-packing, O-ring, oil seal). · Custom design service—from sketches to prototype, match your exact cylinder size. · Engineering knowledge—we evaluate your pressure, stroke, fluid, even rod surface finish. · Manufacturing expertise—we’re a recognized High-Tech Enterprise, Innovation Center, and specialize in sealing OEM. We ship to more than 80 countries. Our clients include OEMs in construction machinery, oil/gas, metallurgy, mining, rail traction, robotics. If your equipment suffers from leakage, short seal life, or frequent maintenance—especially under high pressure or cyclic load—try a fabric- reinforced stack instead of a molded ring. Reach out to the DEDE engineering team. Share your cylinder bore, rod size, oil type, and we’ll help configure a V-packing stack. Adjust ring count, material compound, compression—everything can be fine-tuned. We don’t just sell seals. We solve the problem that seal failure refuses to leave behind.

Minimum Order: 500

Our EVI DC Inverter Heat Pump adopts the latest generation of high efficiency scroll compressor with enhanced vapor injection (EVI) technology. The compressor greatly enhances heating performance in winter under ultra-low temperature without electric auxiliary heating and achieves high energy-saving efficiency. -25ºC Ambient Temperature Winter Heating / 45ºC Ambient Temperature Summer Heating. ENERGY EFFICIENCY RATING LABEL Space heating Series is specially developed with the most cutting-edge heat pump technology and modern design to meet stringent requirements for efficiency, stability and quietness. Not only does Space heating Series use R32 green gas, but also is rated with A+++ energy label. With top energy rating A+++, the unit is energy efficient and can greatly reduce energy bills for users. SMART APP REMOTE CONTROL Our Inverter EVI Heat Pumps are equipped with highly integrated control functions, which can be operated via a remote APP. With a Wi-Fi and 4G/5G connection, you can take full control of your heat pump on your smartphone via an app. The app can be found in the App stores.  The system is easy to manipulate, stable in performance, and is truly a smart operating system. R32 REFRIGERANT The R32 refrigerant is more environmentally friendly compared to other traditional refrigerants. Its ability to enable an inverter heat pump to recharge and recycle more effectively than some other refrigerants means that the unit can run at much higher efficiencies.

DESIGN FOR SMALL SIZE SWIMMING POOL Specially designed for above-ground pool heating, which is the perfect partner of your above-ground pool.  LOW NOISE A fully enclosed cabinet is specially designed for the compressor so that the running noise can be kept inside and the noise of the whole unit can maintain very low. EASY CONTROL Our swim spa heat pump has a simple control panel with an LED display.  It is easy to operate. PLUG & PLAY The swim spa heat pump is light and easy to install, and can be portable every where. Equiped with a plug & play power connection. It’s compact design and horizontal discharge, which is convenient during installation process.

Our commercial swimming pool heat pumps are engineered for demanding pool environments, from hotels and resorts to community centers and water parks. They feature robust compressors, inverter-driven variable-speed operation, and smart controls, ensuring precise temperature management and seamless integration with Building Management Systems (BMS). The use of eco-friendly R410A refrigerant further reduces greenhouse-gas impact while maintaining top- tier heating performance. COMMERCIAL OCCASION APPLICATION LC commercial swimming pool heat pumps are widely used in public places all over the world, such as hotels schools, aqua parks, gyms, etc. A full-inverter commercial pool heat pump delivers reliable, year-round water tempering by extracting ambient heat and transferring it into pool water with minimal energy input. Equipped with R410A refrigerant and advanced inverter technology, these systems achieve high Coefficients of Performance (COP) – 5.23~5.47 – meaning for every unit of electricity consumed, five to six units of heat are delivered, translating into substantial energy savings and lower operating costs for large-scale aquatic facilities.

The application of an improved compressor and inverter technology synergies is a crucial element for the unit to be a top performer which can raise the energy efficiency and provide homeowners with greater cost-savings. DC Inverter Pool Heat Pump Vertical PRODUCT DETAILS HIGH EFFICIENCY OF COP 18.5 R32 full inverter pool heat pump can reach a COP as high as 18.5 at Air 27°C/ Water 27°C/ Humid 80%. APP CONTROL With a Wi-Fi and 4G connection, you can take full control of your swimming pool heat pump on your smartphone via an app. The app can be found in the App Store . LOW NOISE RUNNING A fully enclosed cabinet is specially designed for the compressor so that the running noise can be kept inside and the noise of the whole unit can maintain very low.The average sound level is 29dB(A) at 1. meter. ENERGY-SACING & ENVIRONMENTAL-FRIENDLY R32 Gas-Low GWP Compared to the refrigerantswidely used today, such as R410A, R32 has a global warming potential that is two-third lower and it is remarkable for its low environmental imact, which speed up its popularity in the industry. Energy Saving Application LC applies the latest technology in heat pump  field to achieve the trile energy saving effect on unit. application and behavior.

Side Discharge Pool Heat Pump Features: -Use low GWP R32 refrigerant. -Higher efficient heating/cooling-Saving energy cost -Intelligent control:No human attendance is required -Heating&Cooling function -Corrosion proof titanium heat exchanger-Long life span -Strong ABS plastic cabinet -Rotary/Scroll world brand compressor -Waterproof display and control panel -Flow switch protection -High/low pressure switch protection -Reverse cycle defrosting -Wide working temperature range-Extend swimming seasons -Self-diagnosis-Displaying error code on control panel -Plug and play installation and operation -Patented Design HIGHER EFFICIENT: HEATING/COOLING By integrating a four-way valve system, pools can seamlessly switch between heating and cooling modes, enhancing versatility and extending year-round enjoyment for users. SAVING ENERGY COST With a COP exceeding 6 and a high energy efficiency ratio (EER), the system delivers exceptional energy savings, reducing electricity consumption by up to 70% compared to conventional solutions. REVERSE CYCLE DEFROSTING The LC side discharge pool heat pump employs intelligent four-way valve defrosting technology, which autonomously activates defrost cycles in response to ambient temperature fluctuations. Coupled with a dual-drainage chassis design, this system ensures sustained high-efficiency operation while effectively preventing frost accumulation. https://www.laileyandcoates.com/

If you’ve ever dealt with a pneumatic cylinder losing power, slow actuator movement, or air leakage in a production line, chances are the issue wasn’t in the hardware or programming—it was the seal. Pneumatic piston seals might be small, but they do a big job. They’re responsible for keeping compressed air where it needs to be, resisting pressure changes, and ensuring every piston stroke happens without a hitch. In systems running thousands of cycles per day, a weak seal doesn’t just affect performance—it costs downtime, energy, and in some cases, even product loss. We’ve spent decades working with customers who rely on air-powered systems. That includes companies building automation equipment, operating textile lines, or managing industrial robots. The common question we hear is: "Do you have something that fits right, lasts longer, and doesn’t give us trouble down the line?” Our answer: Yes. And it starts with a deep understanding of how pneumatic piston seals behave in real machines—not just on paper. Built from the Right Material for the Right Reason We manufacture our pneumatic seals using NBR (nitrile rubber) NBR has the flexibility needed to create a tight seal, even when cylinders aren’t perfectly aligned. It can handle the friction from back-and-forth motion. And it resists air pressure without hardening or cracking prematurely. If you’re using dry air, or systems with occasional lubrication, NBR does the job well. In fact, many of the world’s top seal manufacturers still rely on NBR for pneumatic applications. What we’ve done is fine-tune our piston seal profiles and quality control to ensure the best fit for your cylinders, valves, compressors, or actuators. Here’s where we most often see the DEDE pneumatic piston seals series in action: · In linear actuators moving packaging equipment across high-speed lines · Inside robotic arms, where space is limited and the seal must stay effective through constant cycles · In automatic valves controlling air distribution in complex machinery · Within pneumatic presses, where sealing must withstand quick, repeated bursts of pressure · In low-noise systems, where low-friction operation reduces vibration and wear In every one of these systems, a piston seal that’s even slightly worn can throw off performance. That’s why our customers look for sealing parts that are easy to install, dependable from the first cycle, and don’t demand constant adjustment or lubrication. What Makes DEDE Different? We’re not just selling sealing rings—we’re supporting production uptime. Here’s how: · In-stock availability: Over 10,000 common sizes and profiles ready to ship through our DEDE platform · Customization: Need a specific profile, tighter tolerance, or non-standard size? We can handle that from material selection through final production · 30+ years of sealing experience: Our team understands the interaction between seal, cylinder, and system—so we help you choose smarter · Reliable manufacturing: All products are made in our own facility, allowing us to monitor consistency and quality from start to finish More Than Just Rubber A lot of companies make seals. What sets us apart is that we’re known for real-world problem solving. One customer came to us needing a piston seal for a fast-moving actuator inside a bottling line. They had issues with seals from other suppliers breaking down within weeks. Our engineers took a closer look—not just at the seal, but at the movement speed, air pressure, and mounting surfaces. We recommended a slightly modified lip profile, same NBR material, but with improved surface contact. After switching to our version, their replacement interval extended from 3 weeks to over 6 months. That’s the difference a right-fit seal can make. We’re proud that DEDE seals are now used in machines operating in over 80 countries. We provide support not only to large OEM, but also to local maintenance teams and system integrators. If you’re tired of replacing pneumatic seals every few months, or if you’ve struggled to find a seal that fits your design without excessive rework, it might be time to talk to us. DEDE is pneumatic piston seal series isn’t a luxury—it’s a solution built on practical experience, time-tested materials, and service that goes beyond the catalog. Let’s make your machines run smoother, longer, and with fewer interruptions. We’ll handle the sealing—so you can focus on production.

Minimum Order: 500

Drum Forging Brand origin: Runchi  shandong Processing ability: turning, milling, planing, grinding, drilling Maximum weight: Weight ≤ 30 tons Forging equipment: hydraulic press Processing property: hot forging Processing materials: according to customer requirements Heat treatment: normalizing, quenching and tempering, annealing, tempering, surface quenching

Wheel Hub Forging Main features: [Manufacturing Standards] Strictly produce forgings in accordance with established relevant requirements [Technical parameters] According to relevant standards or drawings and requirements provided by the customer [ Product features ] Made according to customer drawings, transparent in price, qualified in size, long in service life, and smooth in surface Daily use: [Product Usage] Engineering machinery, petroleum machinery, shipbuilding machinery, agricultural machinery, wind power equipment, chemical equipment Industries such as pressure vessels, nuclear power, new energy, metallurgy, etc.

Nozzle Forging Brand origin: Runchi  shandong Processing ability: turning, milling, planing, grinding, drilling Maximum weight: Weight ≤ 30 tons Forging equipment: hydraulic press Processing property: hot forging Processing materials: according to customer requirements Heat treatment: normalizing, quenching and tempering, annealing, tempering, surface quenching