The spiral wound gasket is made of the metallic moire belt by the pressure casting and the nonmetallic belt that are superimposing in turn and producing by twining spiral. It can be added by the fortified ring in the case. Because it has multichannel sealing to be able to endure in the high temperature and corrosion on the power plant, avation, petroleum and chemical industry and vale. It is scope of application in the steam, hydrogen, natural gas, and the solution of the petrol, alkali, salt and so on.