Types And Uses of Sealing Materials

Sealing materials should meet the requirements of sealing function. Due to different media to be sealed and different working conditions of the equipment, sealing materials are required to have different adaptability. The requirements for sealing materials are generally:

1) The material has good density and is not easy to leak media.

2) Have appropriate mechanical strength and hardness.

3) Good compressibility and resilience, small permanent deformation.

4) Does not soften or decompose at high temperatures, does not harden or crack at low temperatures.

5) It has good corrosion resistance and can work for a long time in acid, alkali, oil and other media. Its volume and hardness change are small, and it does not adhere to the metal surface.

6) Small friction coefficient and good wear resistance.

7) It has the flexibility to combine with the sealing surface.

8) Good aging resistance and durability.

9) It is easy to process and manufacture, cheap and easy to obtain materials.