欧美日韩国产一区二区三区在线播放_成人毛片免费观看视频大全_午夜亚洲日本在线_在线观看午夜国产精品_亚洲成人三级影院_欧美自拍日韩国产_91精选资源在线播放_亚洲天堂偷拍玫瑰影视_午夜激情六月丁香婷婷_免费岛国大片av高清无码在线观看

VITON fluorine rubber, rubber containing fluorine in the molecule, depending on the fluorine content, that is, the structure of the monomer, there are various types; high temperature resistance is better than silicone rubber. Chemical resistance, resistance to most oils and solvents (except ketones and esters), weather resistance, ozone resistance are good, but cold resistance is poor; generally used in automobiles, motorcycles, etc. The operating temperature range is -20 ℃ ～ 260 ℃. When low temperature is required, a low temperature resistant type can be used. It can be applied to -40 ℃ and the price is higher.