4MM Fluorine Rubber O Rings 1.0mm 30MM ID Seal Oil Resistant FKM O-Ring Green,Seal Oil Resistant FKM O-Ring Green 4MM Fluorine Rubber O Rings 1.0mm 30MM ID, Material: Fluoro Rubber, Features: High temperature resistance, acid and alkali resistance, wear resistance, oil resistance, corrosion resistance, etc, Colour: Green,Model: O-Ring Sealing Gasket Washers, ID Seal Oil Resistant FKM O-Ring Green 4MM Fluorine Rubber O Rings 1.0mm 30MM.