Fluorine rubber seals, when used for engine sealing, can work at 200℃~250℃ for a long time, at 300 and short-term work, its working life can be the same as the engine repair life, up to 1000~5000 flight hours (time 5~10 years); Used in the chemical industry, can seal inorganic acid (such as 67% sulfuric acid at 140℃, concentrated hydrochloric acid at 70℃, and 30% nitric acid at ℃), organic solvents (such as chlorinated hydrocarbons, benzene, high aromatic gasoline) and other organic matter (such as butadiene, styrene, propylene, phenol, fatty acids at 275℃, etc.); For deep well production, it can withstand harsh working conditions of 149℃ and 420 atmospheres. When used for superheated steam seals, it can work in steam medium of 160~170℃ for a long time. In the production of monocrystalline silicon, commonly used fluorine rubber seals to seal high temperature (300℃) under the special medium – trichlorosilicon, silicon tetrachloride, gallium arsenide, phosphorus trichloride, trichloroethylene and 120℃ hydrochloric acid, etc.