FKM rubber,The advantage is that it can resist heat up to 250 ℃ and has resistance to most oil products and solvents, especially all acids, aliphatic hydrocarbons, aromatic hydrocarbons and animal and vegetable oils. The disadvantage is that it is not recommended for ketones, low molecular weight esters and mixtures containing nitrate. Perfluorinated products are widely used in semiconductor industry and information related industry, including PVC, CVD, etching process and various high vacuum sealing process.