... . Several material f or Oil Seal, Rubber Oil Seal, Rubber Seal, O-ring, Rubber O-ring, Rubber Ring Seal and Rubber Gasket like: NBR, HNBR, CR ... of O-Ring: O-type, E-type, U-type, V-type and so on, can make on your type. 4. Different sizes ... . Optional color for you of the Oil Seal, Rubber Oil Seal, Rubber Seal, O-Ring and Rubber Gasket: Black, red, yellow, brown, white, green ...