By PTFE resin, mold pressed and sintered, with excellent corrosion resistance, self lubrication and adhesion is not good, so almost all the chemical medium resistance, with wear resistance, pressure resistance, low coefficient of friction characteristics. Widely used in petroleum, chemical, metallurgy, machinery, food, pipeline, power etc. corrosive medium pump, valve flange seal. All kinds of equipment using temperature: -200 degrees to 260 degrees Celsius using pressure: 0 20.0Mpa for expanded PTFE gasket it is mainly made of one hundred percent pure PTFE fiber plate structure transversely isotropic gasket. In the maintenance of PTFE heat resistance and chemical resistance and viscous resistance and excellent properties at the same time, also has very good creep resistance, cold flow and stress relaxation, but also can prolong the thermal cycle of long life, so as to realize the growth of gasket life. A compression spring can be used in good performance is sensitive to stress the connection, it will not disturbed by bacteria and fungi, especially the production process so that the longitudinal and transverse tensile strength are basically the same, which makes the material in compression after the width is not change, and this expanded PTFE belt completely different.

Because of this special nature which leads to the expanded PTFE gasket is more suitable for narrow sealing surface and the sealing gasket width has equipment requirements. Most of the advantages of expanded PTFE gasket with PTFE gasket, but it has no problems of creep and cold flow, sealing gasket is expanded PTFE reliable, but also has the characteristics of high temperature resistance, sealing, anti burst and so on, so it is better than other PTFE plate gasket. Expanded PTFE gasket itself is relatively stable due to the size and good compliance, so it is ideal in flange conditions. It can not only adapt to the rough surface, but also can press the gasket a very tight, so that the seal more closely, more durable.