Gasket types for flange includes: Asbestos rubber gasket, metal gasket, ptfe pad, rubber gasket and metal winding pads etc.

The gasket standards include: JB/T87-94. 

The standard of Ministry of mechanical Industry JB/T88-94.

The standard of Ministry of mechanical Industry JB/T89-94.

The standard of Ministry of mechanical Industry GB2502-89 Marine standard. HG20606-97,standard of European system, the ministry of chemical industry. 

The flange gasket is a kind of product put in the middle of the sealing surface of two pieces of flange when two pieces of the flange are connected, then the flanges are bolted firmly in order to make the flange not leak.