The construction industry seal work environment is different, the requirements of sealing materials have different adaptability. Sealing material should meet the requirements of sealing function

The requirements for sealing materials are generally:

1, the material density is good, not easy to leak media;

2, with appropriate mechanical strength and hardness;

3, good compressibility and resilience, small deformation;

4, no softening at high temperature, no decomposition, no hardening at low temperature, no brittle crack;

5, corrosion resistance function is good, in acid, alkali, oil and other media can work for a long time, its volume and hardness change is small, and does not adhere to the metal surface;

6, small friction coefficient, good wear resistance; It has the softness combined with the sealing surface;

7, good aging resistance, durable;

8, processing and manufacturing is convenient, cheap, easy to draw materials.