... color are available O ring features: 1. Material: NBR, silicone, NR, FKM, neoprene, etc2. Types of O-Ring: O-type, E-type, U-type, V-type,etc, can ... make on your type.3. Different sizes of Oil Seal ... the Oil Seal, Rubber Oil Seal, Rubber Seal, Rubber Gasket, O-Ring: Black, red, yellow, brown, white, green, violet etc, ...