Graphite ring with flexible graphite tape or flexible graphite packing prepared by the different sizes of ring made of molded products. Adapted to hot water, high temperature, high pressure steam, heat exchange fluid, nitrogen, organic solvents, hydrocarbons, cryogenic liquids and other media. For compressors, pumps, valves, chemical apparatus, instruments and so on. Pressure (Mpa): 25 Temperature (℃): -200 ~ 850 speed (m / s): 30 PH value: 0 ~ 14