Spiral Wound Material: 1Cr18Ni9,304,316 and Monel. Stuffing: Expanded Graphite, PTFE and Asbestos. Temperature: -200C~870C Pressure: 35MPa Available Type: DN10~3000mm Forms: Basic,Inner Ring, Outer Ring and Inner/Outer Ring. Main Usage: It is suitable to statically seal the flang connections in various kinds of pipes, valves, pumps, pressure containers and exchangers.