FKM has high chemical stability, which is the best medium resistance among all elastomers at present. The high temperature resistance of FKM is the same as that of silicone rubber, which can be said to be the best elastomer at present. FKM can be used for a long time at 250 ℃ and for a short time at 300 ℃. FKM has excellent weather aging resistance and ozone resistance. FKM has excellent weather aging resistance and ozone resistance. FKM has excellent physical and mechanical properties. Due to the characteristics of high temperature resistance, oil resistance, high vacuum resistance, acid and alkali resistance, and resistance to a variety of chemicals, FKM has been applied to modern aviation, missiles, rockets, space navigation, ships, atomic energy and other cutting-edge technologies, as well as automobile, shipbuilding, chemistry, petroleum, telecommunications, instruments, machinery and other industrial fields.