Also called graphite modified PTFE gasket or PTFE gasket is black, adding a certain amount of filler for PTFE resin, such as glass fiber, bronze powder, MoS2, graphite, carbon fiber, molding by high speed mixing evenly, then through high heat sintering. With a color, compressibility, recovery and sealing nature. Its unique and advanced characteristics and sealing torque. In the creep characteristics of cold flow and material, overcomes the shortcomings of traditional PTFE, it better to keep the bolt load than traditional PTFE, so as to improve the durability of the seal, but also reduce the flange maintenance. Graphite filling PTFE gasket has the advantages of low friction coefficient, compression strength, improve wear good; makes use of it much more than traditional PTFE, so as to improve the environment and reduce the cost. The application of chemical, petrochemical, hydrocarbon Compound reaction and power plants.