... ,NBR and Silicone Any size and 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. ... Seal, Rubber Gasket, O-Ring: Black, red, yellow, brown, white, green, violet etc, can make it on your order; 5 ... . Your OEM order of Oil Seal,Rubber Oil Seal,Rubber Seal or O-Ring ...