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 perfluorinated ether O-ring (seal [1]), pull length and tightness are good. Whether encountered temperature, pressure, chemical corrosion or all of the above correlation, the products can provide the corresponding problem solving program. Perfluoroethers o-ring (seal) the ability of the vast majority of chemicals, corrosion, including organic acids, inorganic acids, bases, ketones, alcohols, aldehydes and fuel. Therefore, perfluorinated o-ring (seal) long-term service in most of the chemical and petrochemical processes. In other rubber swell or failure of media. o-rings (seals) will not swell or become brittle, still maintaining the original quality. easy to install o-rings, seals more adaptable than the metal Improper installation will not cause wear and tear. It is not the same with PTFE seals, no "cold flow" or shaft wear. Perfluoroelastomers (FFKM) o-ring Perfluoroelastomers is all elastic sealing material 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, oil, steam class, amine compounds, etc.), temperature up to 327 ℃, in the semiconductor industry, chemical treatment process, the automotive industry, the oil industry, pharmaceutical industry, electronic products, solvents, nuclear industry, aerospace, machinery, equipment and other heat in the harsh environment, give full play to its outstanding role. Perfluoroelastomers only has like ptfe same excellent high temperature resistance, chemical corrosion performance (resistant to more than 1,600 kinds of chemical corrosion), has both the elasticity of rubber, its compression at 300 ℃ deformation rate is only 50% the following. Ordinary 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 immersion fluid erosion still able to maintain its elasticity and resilience. In fact, kalrez thermal stability often exceed those fluid itself. Perfluoroelastomers also has excellent air tightness (resistant vacuum up 1.33x10-7-1.33x10-8pa) and high purity plasma resistance and resistance, these features used in the semiconductor industry is also very extensive. Perfluorinated o-ring characteristics: a high temperature; two, strong corrosion resistance; three, ultra-cleanliness imported perfluorinated o-ring Scope: First, the chemical and oil refining processes: The sealing products for mechanical seals, pump, reactor, a stirrer, a compressor housing, a valve, various instruments, and other devices. Typically used as the valve seat, the valve stem packing, the diaphragm and the spacer. Second, the instrument and process analysis on: partition, divide, cylindrical parts, clamps, gaskets. Three, four semiconductor manufacturing, food and pharmaceutical five, aviation and aerospace