Gasket spiral wound gasket metal gasket metal gasket PTFE sandwich gasket Metal winding gasket by V or W shaped thin strip of metal nonmetal soft packing superposed, spiral wound, beginning at the end of spot welding, good compression resilience, seal severe suitable temperature, pressure alternating, is the connection pipe, valves, pumps, heat exchangers, towers, manhole, hand hole flange static sealing element, widely used in petrochemical, machinery, electric power, metallurgy, shipbuilding, medicine, atomic energy and space sectors. Metal tooth type gasket oval gasket octagonal gasket Suitable for high temperature, high pressure. Can be used for sealing parts of pressure vessel, tower, valves, cylinder head. The largest diameter of 1000mm, maximum temperature of 800 ° C, pressure is 1000kgf/cm2.