... 2.ROHS ,ISO9001:2008 3.Excellent abrasion resistance 4.Non-toxic Rubber o ringVarious types,colors and materials are availableThe sealing property ... ,can make on you size3.Different sizes of Oil Seal,Rubber Seal, Rubber Gasket,O-Ring,etc4.You could option the color ... you like on the Oil O-Ring,Oil seal,Rubber Seal,Rubber Gasket:Black,red,white,yellow,brown,green,vioet,etc ...