FKM sealing material everyone knows refers to fluorine rubber, then FFKM refers to what, what is the meaning of an F? FFKM is perfluoro ether rubber, that is, the main material of sealing ring products or rubber products made of perfluorinated sealing rubber. It is a kind of sealing material that is much higher than ordinary FKM fluoro rubber in terms of material application and price, it can be said that it is not a level of product grade, and the material of perfluoro rubber sealing ring is very excellent in terms of high-temperature environment and corrosion resistance (can withstand more than 1600 chemical corrosion).
The material of the FFKM enflurane rubber seal ring is composed of TFE (main chain), PMVE (branch chain), and a bridge. It not only has excellent high and low-temperature chemical corrosion resistance like PTFE but also has the flexibility and elasticity of rubber. The working temperature range of an ordinary perflurane rubber seal ring is between -25°C and +240°C.
FFKM enflurane rubber sealing ring material at 3000°C compression deformation rate is only less than 50%, high-temperature resistance up to 327°C, even if exposed to 316°C constant temperature or a high-temperature environment such as 343°C, will not cause hardening and embrittle seal failure, It can still maintain its elasticity and resilience in direct contact with aggressive fluids.
In the practical field, perfluorinated rubber seals also have excellent air tightness and high cleanliness as well as ionoplasma resistance, which are also widely used in the semiconductor industry.
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