National Oil seal

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Oil Seal

We're professional to produce various of Rubber products with different material and have exported for 20 years.

we can provide you the all kinds of oil seal with high quality and reasonable price.

Our target is "All Customers first, Quality First, and Credit First"

This is the detail of our oil seal:

1.seal material:

NBR,HNBR,PTEE,FPM,MVQ,EPDM,PTFE,and so on

2.seal application:

trains,automobile,motocycles,trucks,buses,agricutural machinery and any equipments

3.seal certification:

GB/T19001-2000-ISO9001: 2000 standard

4.seal production control:

prouduced by priecise CNC machine

5.seal strong point:

we have our own mold center and engineer, can develop all kinds of high tech requireds.

Powerful mold quantity in stock.

Most popular type stytle including TC, TB, SC, SBC, TBG...


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Q:What are the mechanical equipments for producing seals?
Depends on what is the production of sealed products. There are many kinds of sealing products. O rings, oil seals, winding gaskets, rubber gaskets, asbestos gaskets, non asbestos gaskets, many, many, each production equipment is not the same.
Q:Why should the hydraulic cylinder be sealed? Which parts need to be sealed? What are the common sealing rings?
The main purpose of hydraulic cylinder is to push the piston through hydraulic oil to transfer energy to the force body. If the hydraulic cylinder is not sealed, then the two chambers of the tank will be exchanged to form an inner leakage, which will not push the piston to move.Generally in the piston, both ends of the cylinder has a sealing ring (including oil seals and dust).The common sealing rings are O, Y and special sealing rings.
Q:What are the differences between polyurethane TPU and CPU in cylinder seals?
It is divided into casting polyurethane elastomer (referred to as CPU), thermoplastic polyurethane elastomer (referred to as TPU), and mixed polyurethane elastomer (MPU).CPU- is a castable polyurethane elastomer (CPU)
Q:Classification of sealing strip by use
Y ring seals, piston seals, sometimes static sealsMechanical seals, pumps, turbines, high pressure vessels, compressors, agitation. A combination of different materials, including metal bellows seals, can be usedThe oil seal is sealed or sealed with other seals, and dustproofSplit slip ring seal, hydraulic turbine, steam turbine, multipurpose graphite, slip ringLabyrinth seal steam turbine, pump, compressor reciprocating, should be high speed, low speed do not useFloating ring seal pump and compressorCentrifugal seal and screw seal pumpThe magnetic fluid sealed compressor is only used in gas mediumTable 29.2-3 types and applications of dynamic sealsVacuum pressure (absolute pressure) /MPa (g) /MPa / C working temperature line speed of /m - S-1 / M - H-1 leakage rate using the term applicationPacking sealing 1.33 * 10-3, 31.38 -240 ~ 6002010~1000 - clean centrifugal pump, plunger pump, valve stem sealContact forming packing, extrusion type, 1.33 * 10-7, 98.07 -45 ~ 230100.001 ~ 1 ~ 0.16 months hydraulic cylinder, hydraulic cylinderLip type 1.33 x 10-9 0.1 to 10Rubber oil seal - 0.29 -30 ~ 150123~6 months bearing sealing and dust-proof
Q:How long is the shelf life of the cylinder seals?
And you use the environment, sealing material is greatly related. Yes, only 100 times,. Yes, 1 million times.
Q:The function and principle of cooling water for mechanical seal of water pump?
For mechanical seal water, first of all, you should understand the structure of the mechanical seal, mainly by grinding between the static and dynamic ring seal
Q:What rubber kind of rubber does the brake seal of the car use?
The synthesis of liquid to polyethylene glycol or glycol and boric acid ester, because this "oil" may mislead him. Second, the brake should be used three yuan synthetic liquid ethylene propylene rubber (EPDM), which is resistant to chemicals because of the elementary concentration. He used EpDM production after swelling qualified, is very happy.The production of rubber products is important for the accumulation of knowledge
Q:What's the seal water? What about the water seal?
Seal water is to pump the water seal way, in operation the seal water pressure difference, mainly depends on the seal water to enter the water pipe's seal water control valve to carry on the automatic adjustment. The seal groove is arranged in the ash bucket of the lower box, the lower part of the length of a steel plate. Steel plate with displacement in the header, but still not out of the water, this is the one hand to ensure the water wall expansion free, and ensure good sealing process of expansion.
Q:What are the rubber seals made of?
Seals (Rubber) is a kind of universal basic component in the sealing device. It plays a very important role in the contradiction between leakage and sealing. Solve leakage and seal problems in the process of human conquest of nature. An important way to promote technological progress and prevent and reduce environmental pollution. Rubber seals are a kind of rubber products widely used in sealing technology. Because the polymer materials have the precious rubber elasticity, wide temperature range, giving less stress will lead to a large deformation in different medium, this deformation can provide contact pressure, leakage gap compensation, achieve the purpose of sealing. The main products are rubber seals, rubber gasket, flange gasket, rubber block, rubber O ring, V ring, X ring, Y ring, etc. various kinds of form, size, color, hardness and material of rubber products, rubber seal products although we started slowly, but with the progress of society seal, production equipment and technology of the emergence of new requirements for sealing products, technology is more and more demanding, thus promoting new products further. Rubber seal performance
Q:What are the categories of commonly used hydraulic seals?
There are many classification methods, and a wide range of sealed components, together with more than 60 kinds of seals. Dynamic seals, static seals, rod seals, piston seals, shaft seals, atmospheric seals, high pressure seals, oil seals, water - ethylene glycol, phosphate sealing, etc.. The categories intersect each other.

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