Carbon fiber is mainly a kind of special fiber composed of carbon elements, and its carbon content varies with different types, generally more than 90%. Carbon fiber has the characteristics of general carbon materials, such as temperature resistance, resistance, electrical conductivity, thermal conductivity and corrosion resistance, but unlike ordinary carbon materials, its shape can be significantly processed into various fabrics along the fiber axis. The direction is very high. Carbon fiber has a small specific gravity and therefore has a high specific strength. Therefore, the carbon packing has good thermal conductivity, wear resistance, chemical property, high mechanical strength and small starting torque, so it will not cause damage to the pump shaft, and has a long service life, and is various dynamic and static sealing. material. Carbon fiber packing is suitable for corrosion of organic acids and alkalis, organic solvents, etc. It is used in the sealing of flanges, valve reactors and pumps in petroleum, chemical, chemical fiber, coal mining, power generation, metallurgical and other industrial fields.