Rubber o rings 1.Unmatchable price 2.ROHS ,ISO9001:2008 3.Excellent abrasion resistance 4.Non-toxic Rubber o ringVarious types, ... reasonable1.Terials:NBR,silione,NR,FKN,etc2.types of O-ring,E-type,U-type,etc,can make ... 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, ...