Mechanical Hardware

LT/WLT centrifugal circulation spraying water pump for cooling tower LT/WLT pump is a high flow, low head circulating spray pump developed and manufactured for various evaporative condensers. It is an efficient, energy-saving, and environmentally friendly product. The main applications are spraying water pumps for closed cooling towers and condensers, as well as water circulation cooling and general water supply for various unit equipment. 1 - Small size, light weight, linear pipeline, easy to install in the middle of the pipeline 2 - Silent design, the motor adopts a low noise fully enclosed splashproof and dustproof outdoor type motor, which can be installed indoors and outdoors. 3 - Prevent water leakage. Due to the use of specialized customized mechanical seals, it prevents water leakage and is durable and easy to maintain. 4 - Rust prevention treatment, with epoxy resin coating on the pump, has achieved great rust prevention effect 5 - The structure is sturdy, and the pump adopts precision casting, which is sturdy and has a long service life, suitable for the use of circulating pumps 6 - Easy maintenance, the pipeline system does not need to be disassembled, and the pump can be disassembled and repaired using stainless steel bolts and nuts. There is no need to worry about bolt damage during maintenance, and disassembly and installation are convenient

Minimum Order: 1 bags

Not every machine breakdown makes headlines, but if you’ve ever had to shut down an entire system because of a leaking seal, you know how disruptive it can be. In many of the machines I’ve worked with—especially in automotive and heavy equipment—the smallest components often determine the biggest outcomes. That’s where the TG4 rotary shaft seal comes into play. What makes the TG4 oil seal different? The TG4 seal isn’t your typical oil seal. It has a three-lip structure that offers better protection than the standard two-lip versions (like TC or TB). This extra lip isn’t just for show—it helps deal with dust, moisture, and unexpected pressure surges that traditional designs often fail to handle. One client running hydraulic presses in a dusty environment made the switch and saw a drop in unplanned maintenance in just two months. Another key feature is the wave-shaped outer diameter. It’s subtle, but it improves grip and prevents rotation inside the housing—something that’s often overlooked until a seal spins out and causes a mess. Built for real-world use The TG4 uses nitrile rubber (NBR) for the lip and a steel core for structural support. This combination is known for its durability and oil resistance. You’ll find seals like these in gearboxes, shock absorbers, pump shafts, and axles. While FKM is an option in higher heat scenarios, NBR tends to be the go- to for most users thanks to its balanced performance and price. Inside, a spring keeps the lip under tension, which is crucial if the shaft speed fluctuates or if you're dealing with pressure spikes. When should you consider TG4? From what we’ve seen in the field, TG4 performs well in: Off-road vehicles and construction machinery, where dust and vibration are nonstop. Gear-driven equipment with long duty cycles and limited shutdown windows. Hydraulic motors and pumps, where even a small leak can cause major losses. Energy systems, such as wind turbines or generators, where long-term reliability matters. If your equipment isn’t sitting in a climate-controlled lab but out there in mud, dust, or oil mist, this seal has likely been designed with your challenges in mind. Not just another spec sheet We’ve sold TG4 seals to dozens of countries, and while we keep over 10,000 sizes in stock, customization is where we really shine. Need a specific lip material? A different spring tension? Slightly oversized for an old shaft? No problem. We’ve seen some strange setups over the years, and we usually find a solution. One example: a customer in South America needed TG4-type seals for an outdated turbine drive. None of the catalog specs fit. We reverse-engineered their housing dimensions and sent a batch of custom units. They’ve been using them ever since. Why work with DEDE? We’ve been in this business for over three decades. Unlike trading platforms that just ship parts, we actually design and produce our seals. That means we know what goes into each one—and we can stand behind their performance. What we offer: Fast dispatch on common sizes Fully customized designs for special applications Engineering support when you need to troubleshoot or upgrade your system Competitive pricing without cutting corners on materials Final thoughts The TG4 rotary shaft seal isn’t flashy. But if you’re in an industry where downtime costs money, it’s one of those parts you don’t want to cut corners on. We’ve seen it outperform traditional seals time and again—especially where other designs fell short due to dust, vibration, or heat. If you’re unsure whether TG4 is right for your setup, get in touch. We can take a look at your working conditions and help match the right material and structure. At the end of the day, a good seal is the difference between weeks of smooth operation and an unexpected repair job. The TG4 helps tip the odds in your favor.

Minimum Order: 500

Have you ever wondered what helps many machines operate smoothly day after day, often under intense pressure and temperature? You might not give it much thought, but the BASL oil seal is doing a lot of the heavy lifting behind the scenes. This small, often overlooked part plays a critical role in keeping machines running efficiently by sealing in lubricants and keeping out dirt, dust, and other harmful particles. Why BASL Oil Seals Deserve Attention There’s a good reason why many industries rely on BASL oil seals. Unlike basic seals, the BASL version features a double-lip design: one lip keeps the lubricant in, while the second lip acts as a barrier against contaminants like dust and moisture. Together, they offer a smart, practical solution to protect rotating shafts in a wide range of machinery. At the heart of the design is a reinforced metal frame wrapped in flexible rubber. The sealing lip maintains firm contact with the rotating shaft, while the dust lip prevents outside particles from entering. This dual function makes BASL oil seals especially effective in demanding environments where single-lip designs often fall short — like high-speed, high-temperature, or high-pressure conditions. Not All BASL Oil Seals(TC BASL Oil Seal) Are the Same — Material Makes a Difference Different working conditions call for different materials, and BASL oil seals are available in several types to suit various applications. Two of the most commonly used materials are: Fluororubber (FKM): Known for its excellent resistance to heat and chemicals, FKM is ideal for sealing systems in chemical plants, oil refineries, and high- temperature equipment. It holds up well even under extreme thermal conditions. Nitrile rubber (NBR): With great oil and abrasion resistance, NBR is widely used in automotive gear systems, hydraulic components, and general industrial machinery. It offers a balance of performance and affordability, making it a popular choice for everyday applications. Each material brings unique strengths, so selecting the right one depends on your specific working environment — whether it’s dealing with heat, pressure, chemicals, or all of the above. Standard Sizes or Custom-Made — We’ve Got You Covered At NQKSF, we understand that not every piece of equipment works with off-the- shelf parts. That’s why, in addition to maintaining a large inventory of standard BASL oil seals (over 10,000 specifications available), we also provide fully customized sealing solutions. Got aging machinery that needs a hard-to-find size? Working in extreme conditions that require a special material? Our experienced engineers are here to help. From material selection and structural design to testing and final delivery, we’ll make sure your seals are precisely maBASLhed to your system’s requirements — not just in theory, but in practice. Trusted by Clients in 80+ Countries With more than 30 years in the sealing industry, NQKSF has earned a reputation as a reliable partner in sealing solutions. Our products are used in industries ranging from automotive and agriculture to energy, mining, and heavy machinery. To date, we’ve shipped to customers in over 80 countries, and our global reach continues to grow. But we’re not just selling products — we’re providing ongoing technical support and solutions that help reduce long-term maintenance costs. We work closely with our clients to optimize sealing performance, improve equipment stability, and extend service life. BASL Oil Seals: Small Components, Big Impact At first glance, a BASL oil seal might seem like a small and simple part. But when it comes to machinery performance, it plays a big role in keeping things running smoothly. With the right material, a well-thought-out design, and proper installation, BASL oil seals can help prevent leaks, reduce wear, and minimize downtime. At NQKSF, we’re proud to provide not only reliable, high-quality products, but also the custom engineering support that helps our customers solve real-world challenges. Whether you need a standard seal for regular maintenance or a custom solution for a unique application, our team is ready to help you get the job done right. BASL oil seals are more than just spare parts — they are essential tools for machine longevity and reliability. At NQKSF, we’re committed to providing sealing solutions that meet the demands of modern industry, from conventional machinery to extreme operating conditions. With decades of experience, global service capabilities, and a problem-solving mindset, we’re ready to be your trusted sealing partner — now and in the future.

Minimum Order: 500

Generally speaking, it is not necessary to install a bottom valve because corrosion-resistant pumps usually have their own check valves at the inlet. After the corrosion-resistant self-priming pump is shut down, the liquid in the pump chamber cannot flow back to the original pool and is stored in the pump chamber. Therefore, there is no need to add liquid during the second use. However, it does not mean that the corrosion-resistant self-priming pump cannot be equipped with a bottom valve. Installing a bottom valve will improve the effect, because if the one-way valve is sometimes damaged, the bottom valve will serve as a guarantee and will not idle after installation. If a bottom valve is installed, the effect will be better, because if the one-way valve is sometimes damaged, the bottom valve serves as a guarantee and will not idle. After installing the bottom valve, it will also effectively ensure the effective suction range of the pump. Another special case, but if the difference in suction height is too large, or the diameter of the suction pipe is too large, and the volume exceeds the storage capacity of the corrosion-resistant self-priming pump chamber, it cannot work normally. At this point, a bottom valve must be installed to ensure safe and fast self- priming. Therefore, the self-priming pump does not require the installation of a bottom valve, but it does not mean that the bottom valve cannot be installed. After the installation of the bottom valve, the suction range of the pump will be more guaranteed, especially for some small corrosion-resistant self-priming pumps. Due to the fact that small corrosion-resistant self-priming pumps generally do not have one-way valves and achieve self-priming effect through the vacuum generated by the instantaneous pump body, the suction effect of the pump will be better after the bottom valve is installed.

Minimum Order: 1 bags

In the actual work site, many times you want to find an O-ring of the right size - but you may not be able to find it. Especially when you encounter some non-standard size sealing grooves, or old equipment suddenly leaks oil, you need to replace a ring, and wait for molded parts? That will delay things a lot. At this time, o-ring cord are particularly useful. Cut as long as you want, and stick it with special glue to form a circle immediately. If you have some experience, you can get it done in ten minutes and use it on site. Although it is mainly used in static sealing places, its emergency response ability is awesome. Where will it be used? You can guess but you may not have guessed it all To put it bluntly, almost as long as there is a liquid to be sealed and a gas to be prevented from leaking, it is possible for it to play a role. Like hydraulic systems, gearboxes, pumps, valves, and even wind power equipment, sewage treatment plants, and auto repair workshops, these places often see the shadow of o ring cord. Many times, a roll of wire can replace dozens of types of O-rings. Maintenance masters, equipment managers, and field engineers all love it. It is convenient, easy to use, and inexpensive. There are many materials, and it is important to choose the right one. There are many o-ring cord materials on the market, and the common ones are as follows: NBR nitrile rubber: oil-resistant, enough for general equipment, fuel, and hydraulics; FKM fluororubber: heat-resistant and corrosion-resistant, suitable for high temperature and acid-base media; There is really no universal answer to material selection. It depends on the equipment conditions, such as temperature, pressure, type of medium, and where you want to seal it. Don't just think of it as a wire, we treat it as a "live part" At DEDE, we have been in the sealing industry for more than 30 years. This o- ring cord is a rubber wire, but we don't treat it as a "consumable". If you come to ask us for goods, we won't just ask you how many diameters you want and send a courier. We will ask you clearly what medium you are sealing, whether it is static or dynamic, whether it is positive pressure or negative pressure, or whether there is a temperature difference shock. If you really want to fit the working conditions, you have to consider the materials, hardness, bonding method, and groove type at once. This job is no easier than making an engine. A little inventory, dozens of models This is quite interesting. Some customers used to have dozens of different types of O-rings in their warehouses, which not only took up space, but some models were covered with dust all year round. But after using o ring cord, the situation is different. We provided them with several commonly used diameters of wire, plus a small bonding tool, which can basically cope with more than 80% of maintenance needs. The inventory has been reduced, and the efficiency has been improved. Where are the customers? From small workshops to large projects The customers we serve actually span a wide range. Some people open small repair shops, and some people are working on wind turbine blade transmission systems. Some projects are hydropower stations in remote mountains, and some are instrument seals in highly corrosive environments on the coast. What they have in common is that they are reliable in sealing, easy to maintain, and do not cause any delays. Under such demand, O-type strips become particularly cost-effective. The end Don't underestimate a rubber wire. If it is selected incorrectly or connected incorrectly, the entire equipment may leak, stop, or have an accident. But if used well, it can help you solve many things that would otherwise be very troublesome. o-ring cord are not complicated, but there are many tricks. We DEDE have been in this business for a long time, and have seen many customers go from "no idea" to "use it smoothly". If you don't understand any section of wire selection, size, bonding, or material, come and talk to us, don't grope around on your own. Sometimes, a suggestion may be more useful than a hundred sealing rings.

Minimum Order: 1 bags

You may not have noticed it, but it is an indispensable role in many mechanical equipment. We are talking about the o ring core series. As the name suggests, its cross section looks like an "O", and the name couldn't be more straightforward. Although it is just a seemingly simple round rubber strip, its performance in sealing occasions makes many engineers willing to put it in the first place. Why? There are really many reasons. Why do many people use it? One of the great advantages of the o-ring core series is: flexibility and strong adaptability. Unlike those molded o-ring of fixed sizes, this wire-like o-ring core can be cut, that is, one roll after another, and you can cut it as long as you want. After bonding into a circle, it can also be used in many non- standard groove structures, which is particularly convenient for on-site processing. This can be seen in the value of emergency repairs. Sometimes, you urgently need an O-ring of a special size, but there is none in the warehouse. At this time, cut a section of the o-ring core, glue it on the spot, and the problem is solved. It is very practical for industries such as wind power, metallurgy, and water treatment, where the maintenance rhythm is tight and downtime will affect the benefits. This solution is particularly convenient, but it should be noted that the extrusion molding process makes its cross-sectional tolerance greater than that of the full-molded seal. This o-ring core bonded seal ring is more used for static sealing. If it is a high-speed rotating shaft, it is recommended that you choose compression molding, which will be more stable. Where can it be used? You may not think of more Don't underestimate this small seal, its "appearance rate" is higher than you think. From hydraulic systems to industrial robotic arms, from gearboxes to water treatment equipment, it can be seen. Pumps, valves, motors, gearboxes... As long as it involves sealing, it may come in handy. We have customers who are engaged in rail transportation, and there are also customers who are engaged in wind power, chemical industry, and automation equipment. They are also using o-ring cores to solve many on-site sealing problems. There is more than one material, and they adapt to different environments Different applications have different requirements for seals, and NQKSF provides o-ring core wires that are also "different in their strengths." Nitrile rubber (NBR): oil-resistant, cost-effective, and a "regular player" in industrial sites. Fluororubber (FKM): high temperature and chemical corrosion resistance, outstanding performance in energy, chemical industry, and engine. Each material has its own characteristics, and none of them is omnipotent, but as long as the right occasion is chosen, their performance is not bad. Our engineers often help customers choose suitable materials based on their equipment and working conditions. Not just "selling materials", we also understand engineering Many customers come to us not just to buy a roll of wire. They will ask: "My location has high temperature, large pressure fluctuations, and corrosive media. Do you have more suitable suggestions?" - Yes, we have a team of engineers to help you analyze this situation and make customized recommendations. From material selection, cutting length, bonding method, groove matching to test verification, we can participate. For some batch requirements, we can also mass produce according to your drawings to ensure that each batch of sealing rings is tightly fitted. Standard inventory + customized service, flexible combination We have tens of thousands of common specifications in our inventory, which can meet the needs of most working conditions. For non-standard situations, the customization process can be started at any time, and the delivery is also very fast. We control the entire production system ourselves, and we are more assured of the delivery speed and quality control. Trust from more than 80 countries around the world · NQKSF has been in the sealing industry for more than 30 years. We are not the kind of factory that only produces standard parts, but we have our own technical system in material research and development, sealing solutions, and industrial chain management. · At present, our products have been exported to more than 80 countries on five continents around the world, and many customers are long-term international brands. There are also many equipment manufacturers who regard us as engineering partners for joint project development. In summary, why choose NQKSF is o-ring core? 1. It can be cut as needed, and can flexibly meet various size requirements on site; 2. There are many material options, covering everything from normal temperature oil resistance to high temperature chemical corrosion resistance; 3. Save inventory, not picky about groove type, suitable for maintenance conditions; 4. Provide on-site bonding tools and technical support, more worry-free; 5. From a wire to a project plan, we can help you get it done. Although the seal is small, it has a big impact. If you choose the right one, it will not only save trouble, but also reduce maintenance costs and extend the life of the equipment. NQKSF, as a team dedicated to seals, is willing to put these experiences into practice with you. If you are not sure about a certain size or material, our engineers can always contact you to help you find a suitable solution.

Minimum Order: 1 bags

KCG, 2CG high temperature gear transfer pump The pump is Suitable for conveying high-temperature liquids without solid particles and fibers, non-corrosive, with a medium temperature of up to 250degree celsius and a viscosity of 5-1500cst. 2CG high-temperature gear pump is widely used in various industries such as plastic and rubber processing industry, textile printing and dyeing industry, coating industry, wood processing industry, food industry, paper printing and other liquid heat carrier heating industries. Structural characteristics of 2CG high-temperature gear pump: The pump consists of components such as gears, shafts, pump body and pump cover, and shaft end seals, all of which are made of high temperature resistant materials. The operating parts inside the pump are lubricated with the medium conveyed. KCG high-temperature gear pump is equipped with a safety valve to prevent damage to the pump and motor caused by overloading.

Minimum Order: 1 bags

GF fluoroplastic pipeline pump, the overcurrent components are made of high- temperature molded polytetrafluoroethylene, which has better corrosion resistance than metal materials. The impeller is directly connected to the motor, reducing the bearing box and coupling, thereby reducing mechanical energy loss and achieving advantages such as high efficiency and low noise. Features: Vertical structure of fluorine lined pipeline pump, with the same inlet and outlet, no need for diameter change, multiple units can be connected in series, saving space and transporting corrosive liquids. Application: Pumps are widely used in industries such as petroleum, chemical, metallurgical, power, papermaking, flue gas desulfurization, dust removal, food and pharmaceuticals, and synthetic fibers to transport corrosive liquids. They are suitable for temperatures ranging from -20 to 150 degrees Celsius. Remarks 1 - The pump adopts a short bracket direct connection structure(close couple), and the impeller shaft and motor shaft are locked with threaded pull rod. 2 - The impeller and shaft at mechanical seal are integrated structures, which transmit torque to the motor shaft using a Mohs taper. 3 - The shaft seal adopts WB2 external corrugated pipe mechanical seal. 4 - The main shaft of the supporting motor is a specially designed hollow shaft, and the motor form is a vertical V1 type hollow shaft outdoor motor 5 - All pumps in this series are equipped with the motors at the speed of 2900rpm

Minimum Order: 1 bags

Corrosion resistant chemical pump for alkali liquid IJ type single stage single suction cantilever chemical centrifugal pump is a new product optimized and designed based on the IH series chemical pump, referring to the latest foreign technology and combining with the actual use of users. Its rated performance and installation size comply with the ISO2858 standard, and its manufacturing technical conditions comply with the ISO5199 standard. It is mainly suitable for the transportation of slurry with a solid content less than 50% and crystal impurities in chemical processes. Compared with IH pumps, the structure of IJ chemical pumps has the following characteristics: 1 - Shortened the cantilever of the impeller and thickened the diameter of the shaft; 2 - Asymmetric cross-section volutes and pump casings without mouth rings; 3 - Three imported bearings are used; 4 - Equipped with a new type of seal similar to foreign advanced double face mechanical seals or packing seals. Due to the above structure, the pump has the following advantages: 1 - It can transport high viscosity or solid containing media, and the efficiency of the pump is higher than that of the IH chemical pump; 2 - The asymmetric cross-section volute reduces the impact loss of fluid and shortens the size of the pump casing; 3 - Increasing the strength of the shaft reduces the deflection of the rotor, resulting in stable operation and long sealing life; 4 - The impeller nut is integrated with the impeller, improving the inlet conditions of the pump and enhancing the anti cavitation performance of the pump; 5 - Advanced shaft seal form ensures better sealing effect and reduces pump leakage; 6 - The clearance of the pump can be adjusted without disassembling the pump casing and impeller, reducing maintenance time and saving maintenance costs. Applicable fields: alkali production, salt chemical industry, petrochemical industry, paper mills, pulp industry, refineries, coal chemical industry, power plants, pharmaceutical industry, sugar industry, steelmaking plant, water treatment coating industry (degreasing, phosphating, electrophoresis and other processes)

Minimum Order: 1 bags

X-rings, also known as star rings due to their distinctive X-shaped cross- section, represent a thoughtful upgrade from the traditional O-ring. While both serve the purpose of sealing, the X-ring stands out for its refined design— specifically the four sealing lips and a small lubrication cavity in the center. This unique structure helps reduce both friction and starting resistance, making it ideal for dynamic applications. One of the often-overlooked advantages of X-rings is the positioning of the flash line—it sits in the recessed area of the cross-section, which not only improves the seal but also reduces the chances of leakage. In other words, the X-ring takes everything good about the O-ring and pushes it one step further. A Smarter Choice for Demanding Applications X-rings can be used in a wide variety of environments. To ensure optimal performance, the material must be chosen based on factors like temperature, pressure, and the type of medium involved. It’s not just about choosing a rubber ring—it’s about matching the right material to the job. When setting up a system, engineers should factor in peak and continuous operating temperatures, the frequency of use, and in rotating applications, the heat generated from friction. These considerations will determine the service life and effectiveness of the seal. What Makes X-Rings a Better Performer? Unlike an O-ring, which only has one contact point, the X-ring offers four contact surfaces. This means pressure is distributed more evenly, reducing friction by up to 40% and significantly slowing wear over time. It’s a clear performance boost, especially in systems that cycle frequently. Where Do X-Rings Shine? You’ll find X-rings in some of the most demanding applications: Heavy-duty machinery: hydraulic cylinders in excavators and presses Industrial robotics and turbines: rotating shafts and spindles Aerospace systems: actuators in aircraft landing gear that face sudden pressure changes Automotive transmissions: dual clutch systems that require precise sealing Oil and gas: critical components like blowout preventers in offshore rigs Material Options for Different Needs Different environments demand different materials, and X-rings are available in several: NBR (nitrile rubber): cost-effective, reliable across a wide range of industrial uses (-40°C to +125°C) FKM (fluoroelastomer): excellent resistance to high temperatures and aggressive fluids (-20°C to +250°C) PTFE: ideal for low-friction, high-precision sealing in sensitive equipment Why DEDE’s X-Rings Stand Out As a certified high-tech enterprise recognized for “specialization, refinement, and innovation,” DEDE brings over 30 years of experience in sealing technology. We don’t just offer parts—we provide complete sealing solutions. Whether it's rapid prototyping for custom designs or supplying from our inventory of over 10,000 standard parts, our flexible production system meets global demand with speed and precision. Today, DEDE supports clients in over 80 countries with localized technical guidance, ensuring that our seals don’t just fit—they last. If you're unsure about the specifications or material choice for your application, our engineering team is ready to provide tailored advice. With X- rings, it's not about using just any seal—it’s about using the right seal.

Minimum Order: 500

Centrifugal pump with Small vacuum storage siphon tank Siphon tank/bucket, also known as vacuum tank /bucket or water diversion tank, utilizes the principle that the vacuum of a sealed container can generate suction force. When used in conjunction with a regular centrifugal pump, it can produce a self- suction effect (equivalent to a self-suction pump), with a larger self-suction height of about 4m. Its advantages are easy assembly, easy maintenance of a single pump, stable self- priming performance, and more cost-effective than self-priming pumps; The disadvantage is that it occupies a large area. Why choose a siphon tank/ bucket? self-suction/priming pump has a complex pump body structure, relatively high production and installation costs, and a higher overall pump price; The combination of a siphon tank/bucket and a regular centrifugal pump can also achieve the effect of a self-priming pump, but the cost of the individual unit is relatively low, and the maintenance of the pump body is also convenient. If the pump is damaged, only the pump needs to be replaced, and the siphon bucket can continue to be used. In the one in use and one backup working condition, only the continuous siphon bucket can be used, saving procurement costs. Submerged pump is a conventional corrosion-resistant engineering plastic submerged pump. Due to manufacturing process limitations, its submerged depth does not exceed 2m (the submerged pump is too long, unstable to operate, and has a short service life). It is not suitable for use in deep pool conditions; The self-suction height of the siphon tank /bucket and ordinary centrifugal pump can reach 4m, with a wider application range.

Minimum Order: 1 bags

In the global supply chain, a reliable and high-performing sealing solution is critical for the stability of mechanical systems. The o-ring series, widely used across industries, provides the foundation for leak-proof and pressure- resistant assemblies. Whether you operate in automotive manufacturing, energy infrastructure, or heavy industrial machinery, choosing the right o-ring can directly impact operational efficiency, maintenance costs, and equipment safety. what makes the o-ring series essential O-rings are circular elastomeric seals designed to prevent the passage of liquids or gases between machine parts. Their compact shape and elastic properties make them ideal for both static and dynamic applications. Depending on the environment, o-rings can be customized in terms of: material: such as nitrile (nbr), fluorocarbon (fkm/viton), silicone (vmq), epdm, and more hardness: typically measured in shore a temperature range: from -60°C to +250°C depending on material pressure tolerance: varies by application, especially in hydraulic and pneumatic systems Each specification is selected based on working conditions such as chemical exposure, pressure levels, thermal expansion, and movement frequency. DEDE provides full-service sealing solutions With over three decades of expertise in the sealing industry, DEDE offers a complete solution package for global B2B clients: standard stock availability: our warehouse covers over 10,000 o-ring and oil seal specifications, allowing fast delivery for urgent needs custom-made development: we offer end-to-end customization—from material engineering and structure design to precision molding and pressure testing technical support: DEDE’s senior engineers help clients optimize sealing performance and reduce failure rates, particularly in complex or high-risk systems Whether you're dealing with oil pumps, electric motors, gearboxes, or robotic systems, our experts work with your team to ensure the sealing solution fits the precise demands of your machinery. why global buyers choose DEDE DEDE is more than just a manufacturer—we are a solution provider. Our key advantages for international B2B partners include: in-house production: DEDE owns and operates a physical smart factory equipped with automated molding and testing equipment certified innovation: we are a provincial-level innovation center and recognized high-tech enterprise, with several patented seal technologies broad international reach: products are exported to over 80 countries and are trusted by global equipment brands all-in-one inventory: from small o-rings to large industrial seals, our full catalog reduces the need to source from multiple suppliers Our focus on long-term partnerships means we support your procurement team with consistent quality, technical transparency, and after-sales service. applications that rely on the o-ring series The versatility of DEDE’s o-ring series allows them to perform reliably in various high-demand sectors: automotive: fuel systems, engine seals, brake and suspension units industrial automation: pneumatic actuators, cylinders, and control valves energy and oil field: pumps, turbines, and pipe systems in oil and gas industries agricultural machinery: hydraulic systems, water pumps, and gearboxes home appliances: water filters, pressure regulators, and vacuum systems aerospace and transport: sealing units for aircraft, trains, and maritime engines Each application places unique demands on seal integrity, temperature resistance, and longevity—challenges that DEDE’s engineering and material selection address head-on. In global industrial procurement, choosing a reliable o-ring supplier can make the difference between consistent performance and unexpected downtime. With DEDE, clients gain access to a trusted brand with deep technical expertise, full in-house manufacturing, and a ready-to-ship product range. Whether you're sourcing high-volume standard o-rings or need non-standard custom parts, DEDE is your ideal long-term sealing partner.

Minimum Order: 1000

Gear oil transfer pump Horizontal, self priming gear pump is used to transfer lubricating oil or other fluids similar to lubricating oil without solid particles and fibers at the temperature below 200 degree celsius and the viscosity of 5 to 1500 Cst. It can be also used in hydraulic system. Reducing the rotary speed, the pump can deliver the liquids whose viscosity can be up to 500, 000Cst. YCB gear pump is mainly composed of gear, shaft, shaft sleeve, pump body, pump cover and seal etc. The gears are adopted double circular teeth shape, which makes the gears less wear on gear surface, stable revolution, low noise, long service life and high efficiency. Seals can be mechanical seal or packing seal, which can be chosen according to the user’s requirements. Application: 1 - as transfer pump or booster pump in oil delivery 2 - as fuel pump for delivery system, pressurization and injection in fuel supply system. 3 - as the firefighting equipment to transfer foam liquid 4 - as hydraulic pump supplying hydraulic power in hydraulic system 5 - as lubricating pump in all industry fields.

Minimum Order: 1 bags

Bolt holes and threaded joints may appear trivial, yet unsealed they lead to fluid loss, air ingress, and inefficiency. Bonded seals are the simple fix. DEDE is dual workhorse line—self‑centering or non‑self‑centering—ensures every connection holds tightly. What Makes Them Special? Self‑Centering Bonded Seals: Fixes automatically in the bore, making assembly fool-proof, even in field service Non‑Self‑Centering Bonded Seals: Ideal for flush mounting and full compression sealing Key Specs Materials: Rubber types—NBR, HNBR, FKM—bonded to steel or stainless cores Temperature range: -40 °C up to +250 °C depending on rubber Pressure capability: Up to 40MPa in demanding oil/hydraulic circuits Where You’ll Find Them Pumps, motors, valves in machinery and robotics Gearbox drain/fill ports in automotive and railway vehicles Cylinder head plugs in automotive and industrial engines Hydraulic valve manifold plates in wind turbines Heavy-duty equipment in construction, mining, agriculture DEDE – More Than Just Seals Stock: 10K+ O‑rings and seals ready to ship Custom: Tailor-made bonded seals from initial design to lab testing Tech support: 30+ years of sealing problem-solving know-how Brand Highlights Own mold shop and bonding plant for consistent quality Certified as High‑Tech Enterprise, contributing to China’s seal industry cluster Serving global markets in Asia, Europe, Americas with reliable supply The TakeawayFrom the workshop to the factory floor, from prototype to production—DEDE is bonded seals lock down your system. Whether self‑centering or not, they keep hydraulic systems leak-free and operators worry-free.

Minimum Order: 500