Oil seals are used to protect shafts & bearings from ingress of dirt, foreign matter & egress of oil or grease. Generally consisting of an outer circular metal part, an inner flexible member that does the actual sealing and is bonded to the metal part by chemical adhesive agents. There are different types of oil seals that fit a different application and surroundings and are made out of different materials. The right material and type of oil seal is determined by the application and the medium that will be used with the oil seal. The most commonly used oil seals in most applications are rubber cased or metal cased oil seals.
