Perfluoro rubber profile: three or more fluorine-containing rubber monomer polymerization, the position of all of the hydrogen atoms are replaced by fluorine atoms on the monomer. It has excellent resistance to high temperature hardening properties, and both rubber elasticity and corrosion resistance of PTFE. In -20F-615F range, the perfluoroethers O-ring (seal [1]), pull length and tightness are good. Whether it is experiencing temperatures, pressures, chemical corrosion or all of the above relevant circumstances, the product can provide appropriate solutions to solve problems. Perfluoroethers o-rings (seals) resistant to the majority of chemical corrosion, including organic and inorganic acids, alkalis, ketones, alcohols, aldehydes and fuel. Thus, perfluorinated o-rings (seals) long-term service in most of the chemical and petrochemical processes. In other rubber will expand or failure of media. o-ring (seal) does not swell or become brittle, remains the original quality. convenient o-ring installation, more adaptable than the metal seal Improper installation, will not cause wear and tear. It is not the same PTFE seals, no "cold flow" or shaft wear. Perfluoroelastomer (FFKM) o-ring perfluororubber is all elastic sealing material high temperature resistance, solvent resistance and high purity chemical characteristics of the best rubber material, resistant to chemicals and corrosive media (resistant to acid, alkali, more than 1600 kinds of chemical corrosion ethers, ketones, esters, nitrogen compounds, hydrocarbons, alcohols, aldehydes, oils, steam class, amine compounds, etc.), the temperature can reach 327 ℃, in the semiconductor industry, chemical treatment process, the automobile industry, oil industry, pharmaceutical industry, electronic products, solvents, nuclear industry, aerospace equipment, and other heat-machinery, in harsh environments, give full play to its role of excellence. Perfluoroelastomers not only as excellent as ptfe high temperature resistance, chemical corrosion performance (resistant to more than 1,600 kinds of chemical corrosion), has both the elasticity of rubber, which when compressed at 300 ℃ deformation rate is only 50% the following. Common Perfluoroelastomers operating temperature range of -25 ℃ ~ + 240 ℃ between DuPont kalrez7075 high temperature up to 327 ℃, even when exposed to a constant temperature of 316 ℃ or 343 ℃ such as intermittent high temperature environments, kalrez production nor cause seal failure occurs hardening and embrittlement, kalrez in direct contact with the impregnating aggressive fluid still maintains its elasticity and resilience. In fact, kalrez thermal stability often exceed those fluid itself. Perfluorinated rubber also has excellent gas resistance (vacuum up 1.33x10-7-1.33x10-8pa) and high purity resistance and plasma resistance, these features used in the semiconductor industry is also very extensive. Perfluorinated o-ring characteristics: First, high temperature; Second, strong corrosion resistance; three, ultra cleanliness