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China, Chinese Durable PTFE and NBR Wiper Seal for Hydraulic Cylinders1 Industrial Products Supplier Manufacturer Details, price list catalog:
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Sealing GasketsSeal RingPTFE Wiper SealRubber Hydraulic Seal
Guangzhou NextGen Technology CO.,LTD
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Product Description Hydraulic seals and pneumatic seals are designed as per the cylinder working pressure, cylinder speed, operating temperature, working medium and application.Hydraulic seals are generally relatively soft, non-metallic rings captured in groove or fixed in a combination of rings, forming a seal assembly, to block or separate fluid in reciprocating motion applications. Hydraulic seals are vital in machinery. Their use is critical in providing a way for fluid power to be converted to linear motion. Not only must the hydraulic seals prevent leakage of fluid from the Cylinder, but hydraulic seals must also withstand high pressures, extreme temperatures and transverse forces within the cylinder. In such applications, the function of Hydraulic Seals goes far beyond preventing fluid leakage.Hydraulic seals can be made from a variety of materials such as polyurethane, rubber or PTFE. The type of material is determined by the specific operating conditions or limits due to fluid type, pressure, fluid chemical compatibility or temperature.A static hydraulic seal is located in a groove and sees no movement - only sealing within its confined space, acting like gasket.A type of dynamic hydraulic seal called a rod seal is exposed to movement on its inner diameter along the shaft or rod of a hydraulic cylinder.A type of dynamic hydraulic seal called a piston seal is exposed to movement on its outer diameter along the tube or bore of a hydraulic cylinder.A hydraulic seal is used to contain fluids and maintain the hydraulic pressure (piston seal, rod seal, back-up ring), to stop the inlet of impurities and to preserve the lubricating film on the rod (wiper seal) and to resist any deformation under a radial load by guiding the piston and rod (wear ring and guide strip).NextGen Tech has a complete range of hydraulic seals and we can also assist you in creating custom-made seals for linear and static hydraulic applications. Seal FunctionsEach dynamic seal in a hydraulic cylinder has a special function to contribute to the performance of the system.Piston Seal FunctionsActs as a pressure barrier and prevents fluid passing the piston; important for controlling the cylinder motion or maintaining the position at restRod Seal FunctionsAct as a pressure barrier and keeps the operating fluid inside the cylinderRegulates a film of fluid on the surface of the piston rod as it extends; important to inhibit rod corrosion and lubricate the wiper and rod seal itselfAccept the lubrication film back into the cylinder when the rod retractsBuffer Seal FunctionsProtect the rod seal from fluid pressure spikes in excess of system pressureAttenuate the fluctuations in system pressure, thereby improving rod seal performance by allowing the rod seal to deal with more constant or gradually changing pressureAct as an internal excluder to keep system contaminants, such as metal particles from damaging the rod sealWiper Seal FunctionsPrevent external contaminants from entering the cylinder assembly and hydraulic system (pump, reservoir etc)Accept the lubrication film back into the cylinder when the rod retractsGuide Rings (rod and piston) FunctionsPrevent metal to metal contact between componentsReact to radial loads caused by side loads on the cylinder assemblyNextGen Tech SZ profile is a double acting wiper for use in low to medium duty hydraulic cylinders. It is a two-piece design comprised of a filled PTFE cap that is energized by a standard size O-ring. The wiper and seal design of the SZ profile assists the primary rod seal in preventing leakage by helping seal fluid in the cylinder when the rod extends. When the cylinder rod retracts, the outside sealing edge prevents contamination from entering the system. Usually, it will be used with NextGen Tech OJ, B3 or Y1 type hydraulic rod seal. Technical dataTemperature-40°C / +200°CSpeedUp to 15m/sMediasMineral-based hydraulic oilHFA, HFB, Biodegradable hydraulic oil Non-aggressive gases,WaterMaterialFriction ring: Bronze-filled PTFEO-ring: NBR/FKMNoteThe above data are maximum values and cannot be used at the same time. For example, the maximum operating speed depends on material type, pressure, temperature and gap value.Temperature range also dependent on medium.ApplicationsWhen paired with OJ rod seal, they produce a sealing system capable of handling higher speeds, large range of fluid compatibilities, and temperature range of service. For other rod seal arrangements with SZ, it is necessary to make sure the rod seal will provide proper pressure pump-back, or alternatively vent the system. The SZ wiper is often preferred for heavier duty and large-diameter applications. AdvantagesSmall installation grooves. Excellent sliding properties. High wear resistance, long service life. Available in diameters up to 2200mm.ISO/DIN 6195 Type D installation dimensionsMinimal break-out and dynamic slide friction. Therefore, no stick-slip. Steady movement is guaranteed even at low velocity. Can compensate for deflections of the piston rod or plungerVery high resistance to hydraulic media Installation InstructionsFAQ1.Our price:Our price is not the lowest one, but compared with the same quality level product,ours is the best one.2. How can we guarantee quality?Always a pre-production sample before mass production;Always final Inspection before shipment;3.What can you buy from us?Kind: Oil Seals,O-ring, Rod/Piston seal, Gas seal, Guide elements, Large sized Seals Customized Seals.Material: NBR/EPDM/FKM/Silicone/HNBR/PU4. Shipping:Quickly delivery, with several delivery ways, such as DHL/FEDEX/UPS/TNT express, Air and Ocean shipping way. We have several express accounts and can help you save cost. 5, About customized Service:Drawings or samples, it is enough. We can produce colored rubber seal just based on your drawing or samples with kinds of colors. We also can give the professional advice based on your requirement.
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