Oil Seals also known as Shaft Seals and Grease Seals. Oil Seals helps in prevent lubricant and stop harmful contaminants from entering machinery between stationary and moving components in mechanical equipment and all other assemblies in both rotary and axially moving shafts. Oil Seals are used in every type of machine and vehicle in operation, gearboxes, hydraulic cylinders, Oil Seals prevent abrasives, corrosive moisture and other harmful contaminants from entering the equipment . Oil Seals consists of a Metal Ring, Rubber, Spring.