Main Usage: It is suitable to seal with stuffing various kinds of machine pumps and valves. It can aslo be used to seal hot water, high temperatuer and high pressure steam, heat exchanging liquids, hydrogen, ammonia, organic solvents, hydrocarbons and low temperatuer liquids, etc. Material: Expanded Graphite and Stainless Steel Belt. Temperatuer: -200C~800C(non-oxidizing envionment). Pressure:3 2MPa Available Types: DN6~100mm and other nonstandard packing rings