... ,VITON,SILICON PTFE,HNBR,PU etc. 1.material : FKM/Viton 2. Many types of O-Ring : O-type, E-type, U-type, V-type ... can make on your size. 4. Optional color for you of the oil seal, O-Ring and rubber gasket: Black, red, yellow, brown ... OEM order of oil seal or O-Ring , rubber gasket is welcomed as well. 6. Apply for: Auto, air condition, machinery, water pumps ...