The graphite packing ring is pressed by graphite band, without any filling agent and adhesive, and the purity is more than 98%. The standard section of the packing ring is square, and can be processed into a wedge or V shape, which is suitable for high pressure parts. Graphite packing ring for acid and solvent and other corrosive media and does not pollute the medium; also used in high pressure valve, piston pump, mixer and other media can not be contaminated sites such as food, medicine, papermaking, chemical and other industries.