Full features of gasket, rubber gasket that is in use, should be fully taken into account the following factors:
1. has a good elasticity and resilience can adapt to changes in pressure and temperature fluctuations with appropriate flexibility and fit very well with the contact surface;
2. do not pollute the process fluid;
3. low temperature without hardening, shrinkage is small;
4. processing performance, and convenient installation and press;
5. bonding and sealing surface, easy disassembly.