Penetrability resistance

Material use in sealing system, gasket should not penetrable below allowable temperature and pressure.

Compressibility

The interface between gasket and flange should dovetail after been clamp with connecting bolt to ensure sealed.

Creep resistance

Gasket should have good creep resistance in service temperature and pressure. Otherwise, it will cause leakage by lost tensional moment of bolt and reduce the surface stress of gasket.

Corrosion-proof

The gasket should not been corroded by service chemical medium and not polluted medium

Flexibility

Even under the state with steady system. Two Fran that join , because the influence of temperature and pressure is certain to have small displacement, so the elasticity of the spacer should be able to remedy this displacement.

Adherent-proof

The gasket can be easilyremoved after useage.

Non-corrosion

The gasket should be no corrosion to the surface of flanges.

Heat-resistance

Ensure gasket used normally in the minimum temperature and maximum temperature.

Gasket stress requirements by temperature and pressure:

The maximum temperature and pressure cannot necessarily be used simultaneously. General, it will be used in high temperature, low temperature low pressure and high pressure. The operating temperature and pressure of sealing capability for flanges and gasket is related to various factors, especially the materials selected of flanges. For A105 carbon steel, the relation of temperature and pressure shows below: