What are the advantages of polyurethane oil seals?

Due to different usage environments and site conditions, DLSEALS Seals tells you that the media of rubber sealing materials used in oil seals are different, which also determines the use and application environments and places of oil seals. In the industry, common rubber sealing materials include nitrile rubber sealing materials, acrylic and fluororubber sealing materials. Sealing materials other than rubber include silicone rubber sealing materials, polyurethane, hydrogenated nitrile rubber materials, PTFE rubber sealing materials (some oil seals lip) etc.

1. Polyurethane, the English abbreviation PU, includes hard polyurethane plastics, soft polyurethane plastics, polyurethane elastomers and other shapes, which are divided into thermoplastic and thermosetting

2. What are the characteristics of oil seals made of polyurethane?

General rubber oil seals want to obtain high elasticity by adding large fillers. Polyurethane rubber seals can obtain high elasticity. Polyurethane has excellent wear resistance and is known as "resistant rubber" internationally. The wear resistance of polyurethane is related to its high tear strength. , the friction coefficient is in the range of 0.3-3. It has excellent ozone resistance, good low spam resistance, radiation resistance, good oil solubility resistance, and good hydrolytic stability.

3. What are the disadvantages of oil seals made of polyurethane?

It is easy to be hydrolyzed by water vapor, boiling water, strong acid and alkali, has poor mechanical properties, slow heat diffusion, and convenient heat storage. Polyurethane oil seal

4. In which industries are oil seals made of polyurethane generally used?

Polyurethane elastomer is an important sealing material in hydraulic transmission and control systems and is used in sealing rings, oil seals and sealing gaskets of machinery and vehicles. Concrete mechanical hydraulic sealing system is a typical application and one of the important sealing materials in the development of many new sealing technologies.

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