Any type of gasket in the harsh environment, to ensure the long effective seal, and must have the following eight important characteristics:

1, gasket tightness
Sealing system for the media, the gasket leak does not occur in the recommended temperature and pressure within a certain time.

2, gasket compressibility
The contact surface of the gasket and flange connecting bolt, should be good agreement, in order to ensure sealing.

3, the gasket creep resistance
Gasket under the influence of the pressure load and temperature, creep resistance is better, otherwise back to cause the bolt torque loss, resulting in the gasket surface stress decreases, and thus hard gas
system leaks.

4, the gasket's resistance to chemical corrosion
The selection of the gasket should be excluded from the chemical corrosive media, and can not be contaminated medium.

5, the gasket resilience
In the stability of the system conditions, connected to two flanges due to the effects of temperature and pressure will certainly be a small displacement, the elastic function of the gasket should be able
to compensate for this displacement, in order to ensure the tightness of the system.

6, gaskets, anti-bonding nature
Gasket after use should be easy removed from the flange, not bonding

7, gaskets, non-corrosive
The gasket response to the connection flange surface non-corrosive.

8, gaskets resistant to temperature
Gasket selection should ensure that the minimum temperature and maximum temperature of the system's normal use.




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