The scientific name of carbon fiber is called "polypropylene based carbon fiber", which is made of carbon fiber and related matrix resin, such as epoxy resin. A number of physical and mechanical properties is comparable to metal. First it is made by softening treatment of a high strength, high modulus and continuous carbon fiber filament, after then woven into carbon fiber graphite packing. This kind of packing is first mixed with the mixture of graphite powder and PTFE emulsion. Carbon packing has good thermal conductivity, wear resistance, chemical stability, and high mechanical strength, starting torque is small, so it will not cause damage to the pump shaft. It has long service life, and is an ideal material for a variety of dynamic and static seal.And it has excellent chemical stability and thermal conductivity, and high strength, especially suitable for sealing of various rotary pump, reciprocating pump containing particles and some other chemical corrosive medium. Carbon fiber packing ia appliable for acid ,alkali and other corrosive liquids, organic solvents, used in sealing of flange, valve, reactor, pump in petroleum, chemical industry, chemical fiber, coal mining, power generation, metallurgy and other industrial. Because of its characteristic of high temperature resistance (>3000 ℃), corrosion resistance, low thermal expansion coefficient, high specific strength and high specific volume,it is widely used in the fields of aerospace, aviation, chemical industry, electronics, sports equipment and so on.