Various types , colors and materials are available; Good quality, reasonable price Rubber jacket1, Terials: NBR, silione, NR, FKM, etc2, ... and color are available3, The sealing property is good4, Good quality with competitive priceRubber gel1, Terials: NBR, silione, NR, FKM, etc2 ... and Rubber Gasket is welcome.6, We promise the high quality but competitive price for Oil Seal, O-Ring, Rubber Seal ...