Spiral Wound Gasket is the best in the compression resilient in all thehalf-metal seal gasket, which is made by the metal hoop band anddifferent kinds of packing material. We can make its structure densityaccording to the demand of different locking force, and we use the innerand outer circle to control the maximum compact degree. So it can bewell suit the rough flange face, especially suit the situation ofunbalance load, loose of joint force, temperature and pressure changeperiodically , concussion and shock. It is used in flange joint ofvalve, pump, heat exchanger, tank, and handhole. It is widely used inthe fields like petrochemical industry, machine, electric power,metallurgy, ship-building, medicine, atomic energe, space navigation. Wemade spiral wound gasket conform to different standards,forexample,ASMI,BS,JIS,DIN and several other criterion used in china.