It is made by roll high quality and stainless steel into "V" or "W" shape, then fill with graphic asbestos, PTFE. It is twisted on special equipment and come into being the twist gasket.  It can be part of the elimination of pressure, temperature change and the effects of mechanical vibration. It can keep its excellent sealing performance under the alternating cycle of various harsh conditions such as in high temperature, low temperature, high vacuum, shock and vibration etc   

       t is widely used as sealing in flange connection part of pipe, valve, pump, pressure container, hot-exchange condensates, pagoda entry hole in the industry area as oil, chemical, machine, metallurgy.