... , NR, FKM, etc2, Various types and color are available3, The sealing property is good4, Good quality with competitive priceSilicone gel1, Terials ... could option the color you like on the Oil O-Ring, Oil seal, Rubber Seal, Rubber Gasket: Black, red, white, yellow ... the high quality but competitive price for Oil Seal, O-Ring, Rubber Seal, Runner Ring, Sealing Ring, Sealing Gasket. silicone rubber gel