Packing graphite packing graphite packing ring is cut into ribbon wound on the mold made by the suppression of different dimensions of the ring, this ring has an excellent elasticity and stability, high temperature and high pressure that is corrosion-type graphite packing expanded graphite packing, as a sacrificial anode by adding corrosion inhibitors to protect the stem and packing, graphite packing itself retains a good self-lubrication and thermal conductivity, coefficient of friction small, soft, good, high strength, easy installation of axis has a protective effect on stroke, etc. apply to hot water, high temperature, high pressure, steam, heat exchange medium, ammonia, hydrogen, organic solvents, hydrocarbons, cryogenic liquids, etc., for hydrogenation plant, paper, petroleum equipment, power generation plants, chemical plants, steel mills, petrochemical plants and other industries. In addition to packing graphite packing ring, but also other materials can be made of filler packing ring, such as carbon fiber packing, Kevlar packing, PTFE packing, asbestos packing with PTFE, etc.