... , colors and materials are available; The sealing property is good; Good quality, reasonable pric hydraulic hose 1, Materials: NBR, silione, NR, FKM, etc ... quality with competitive price 5, You could option the color you like on the Oil O-Ring, Oil seal, Rubber Seal, Rubber ... O-Ring and Rubber Gasket is welcome. 7, We promise the high quality but competitive price for Oil Seal, O-Ring ...