PTFE has many names such as F4, Teflon, plastic Wang, Teflon etc.. PTFE resin PTFE has some special properties: The excellent corrosion resistance--It can withstand except molten alkali metals, fluoride and all the strong acid medium is higher than 300 ℃ sodium hydroxide addition(including aqua regia), a strong oxidizing agent, reducing agent andvarious organic solvents. The effects insulation resistance--It can't be affected by environment and frequency, volume resistanceis 1018 ohms/cm, small dielectric loss, high breakdown voltage. The excellent high and low temperature resistance--Its effect on the temperature change is not big, it has wide range oftemperature field,and it can be used from - 190 ℃ to +260 ℃. The distinctive self lubrication--It has the lowest friction coefficient of plastic, is the ideal of oil-free lubricating materia. The prominent no sticky--It is a solid material known not to adhere to the surface, is a surfaceenergy minimization of solid materials. The excellent resistance to atmospheric aging，Irradiation resistance and lower permeability--Longterm exposure to the atmosphere, surface and performance remains unchanged. The valuable incombustible--its limiting oxygen index below 90. As engineering plastics, can be made of Teflon tube, rod, strip, plate,film etc.. Generally used in high performance corrosion of pipes,containers, pumps, valves and high frequency radar, communications equipment, radio equipment. The dispersion of various materials can be used as an insulating impregnating liquid and a metal, glass, ceramics and so on the surface of the corrosion layer. Various PTFE ring, PTFE gasket, PTFE packing and other widely used types of anti-corrosion pipe flange seal.