The metal winding mat is a very resilient resilience in the semi-metal mat, which is made of V-shaped or W-shaped thin steel strip and various fillers (graphite, asbestos, tetrafluoro) alternately wound, and its structural density can be It is made according to different locking force requirements, and the inner and outer steel rings are used to control the compression degree. The surface precision of the flange sealing surface of the gasket contact is not high. It is especially suitable for occasions where the load is uneven, the joint force is easy to relax, the temperature and pressure are periodically changed, and there is shock or vibration. It is a static sealing original for flanges at valves, pumps, heat exchangers, towers, manholes, hand holes, etc. It is widely used in petrochemical, mechanical, electric, metallurgical, shipbuilding, pharmaceutical, atomic and aerospace sectors.