Ptfe gasket is a compact, three-dimensional space is easy to form, can be embedded into the micro crack and damage repair crack plugging, especially in acid resistance, alkali resistance, corrosion prevention and non-metal facilities, large diameter vessels connection range outstanding effect, can effectively protect the installation of brittle data connection. Moreover, it can compensate and balance the errors caused by defects, machining, rigid deformation, installation dislocation, etc., balance the uneven preload force, and effectively solve the leakage problem of various facilities under complex conditions.
The operating environment of the PTFE gasket is as follows:
1. Without auxiliary system, you can only change the sealing layout and improve the raw materials.
2. The harsh conditions become acceptable conditions for sealing.
3. In practice, there are almost no PTFE flanged gaskets without any auxiliary equipment. For example, the series PTFE flange gasket for high pressure application and the high temperature PTFE flange gasket must choose the corresponding auxiliary equipment.
What are the types of PTFE gaskets?
1. Pure tetrafluorogasket:
Pure tetrafluoroethylene gaskets are flat gaskets, V-shaped gaskets, piston rings and ball valve gaskets made of polytetrafluoroethylene rods, tubes and plates by mechanical turning or cutting, etc., with very good corrosion resistance, anti-aging and non-conductive characteristics. The pH value of polytetrafluoroethylene is 0-14, and it can have very good mechanical strength between -100℃ and 100℃.
2. Polytetrafluoroethylene gasket:
Polytetrafluoroethylene gasket is composed of soft gasket such as asbestos rubber plate or asbestos free plate and polytetrafluoroethylene coated sheet phase combination, and V-type tetrafluoroethylene gasket is made of tetrafluoroethylene plate mechanical turning, U-type tetrafluoroethylene gasket is made of tetrafluoroethylene tape wrapped edge after heating bonded. With excellent corrosion resistance and good compression rebound rate, it is also widely used in a variety of strong acids, strong alkalis, strong oxidation, chlorine gas and not allowed to pollute the media seal.
3. Expansion PTFE gasket:
The expanded tetrafluoroethylene sealing gasm is made of polytetrafluoroethylene resin after sintering with a mold, which has very excellent corrosion resistance and good self-lubrication and non-adhesion, so it is almost resistant to all chemical media, and has wear resistance, pressure resistance, low friction coefficient characteristics. Widely used in petroleum, chemical, metallurgy, machinery, food, electric power and other corrosive media of pipelines, pumps, valves and other equipment flange seal