PTFE spiral wound gasket is a kind of semi-metallic flat gasket made of V-shaped or W-shaped thin steel strip and filling material PTFE spirally wound. By changing the material combination of the gasket, the problem of chemical corrosion of the gasket caused by various media can be solved.
This gasket has good compression resilience, multiple seals and a certain self-tightening function, which can partially eliminate the influence of pressure, temperature changes and mechanical vibration. The flange surface is not bonded, which is convenient for maintenance and replacement. It can maintain its excellent sealing performance under high temperature, low temperature, high vacuum, shock vibration and other cyclical changes and various harsh conditions. It is suitable for sealing parts where temperature and pressure change drastically. It is a static sealing element for flange connections such as pipes, valves, pumps, heat exchangers, towers, manholes, and hand holes.
By changing the tension of the wound steel strip, the density (hardness) of the wound gasket can be changed to meet the needs of various applications. It is widely used in petrochemical, machinery, electric power, metallurgy, shipbuilding, medicine, atomic energy and aerospace industries.

ePTFE waterproof and moisture permeable membrane