Fluororubber O-ring is a copolymer of vinyl fluoride and hexafluoropropene.Depending on its molecular structure and fluorine content, the chemical resistance and low temperature resistance of fluorine rubber are also different.Fluororubber is known for its flame retardancy, excellent air tightness, ozone resistance, weather resistance and outstanding anti-aging functions. 
Temperature scale:
Static seal: -26℃ to 232℃, short time up to 275℃
Dynamic seal: -15℃ to 200℃
Hardness scale: Shore A 50 to 90 degrees
 
Application: Fluororubber O-ring can be used at 250℃ for a long time to seal the engine of car and airplane. It is very suitable for sealing the engine's power output spindle. It can also be used for valve stem seal, cylinder liner seal, clutch seal, air filter seal, fuel pump seal and fuel rubber liner seal, etc.Fluororubber seals can only be used in high vacuum conditions.Fluororubber can be used for sealing of inorganic acid medium, 67% sulfuric acid at 140 ° C, concentrated hydrochloric acid at 70 ° C, 30% nitric acid at 90 ° C can be used for a long time, special formula fluororubber can also be used for aqua royal water.In semiconductor manufacturing industry, it can be used in silicon tetrachloride, gallium arsenide, phosphorus trichloride below 275℃ medium.