Oil Seals are a good resource for any application where dirt, dust or other foreign matter needs to be sealed out, and or oil or grease sealed in, to protect the bearing on a rotating shaft. These seals usually consist of an outer case made of steel or an elastomer, and a sealing lip made out of an elastomeric or thermoplastic material. Also known as lip or shaft seals, Monroe Seals has a multitude of lip designs to choose from for the endless amount of applications.