Description: Isolation Seals are designed to prevent leakage and contamination as well as isolate a forced vibration originating from a mating component. Attributes: Cat® Isolation Seals are precisely designed to perform in this very demanding application. They must be able to absorb vibration while sealing fluid between two mated members.Cat® sealing system uses a robust design, testing, and validation process. Buy the latest Genuine Cat® seal to protect your investment. Applications: Isolation seals are used on valve covers and oil pans.