spiral wound gaskets

taking asbestos,graphite or PTFE as spacing material,it is wound spirally with high quality alloy or stainless tape of "v"or "w"shape cross-section.They are suitable for petroleum,chemical,metallurgical,power and ship building industries,static sealing at connecting joints of flanges of pipings,valves,pumps,pressurized vessels,congdensers,tower manholes and handholes.Because of high mechanical strength,convenient application and good resilience,they are more suitable for the situations where temperature changes intensively and frequently.