The metal wound gasket is made of pre-pressed thin metal v-shaped belt and non-metallic filler belt, which are tightly fitted, overlapped and spirally wound. It is the most widely used sealing gasket at present. It does not soften or creep at high temperature, and does not harden or shrink at low temperature. It is a gasket with good resilience among semi-metallic sealing gaskets. It is made of V-shaped thin steel belt and various fillers alternately wound. It can withstand high temperature and high pressure and adapt to ultra-low temperature or vacuum conditions. By changing the material combination of the gasket, the chemical corrosion problem of various media on the gasket can be solved. Its structural density can be made according to different locking force requirements. In order to strengthen the main body and accurately position, the wound gasket is equipped with a metal inner reinforcement ring and an outer positioning ring. The inner and outer steel rings are used to control its maximum compression. The surface accuracy of the flange sealing surface contacted by the gasket is not high, and the manufacturing process is simple and the price is cheap.