This oil seal is installed at the cutterbar drive of the parent combine. It prevents lubricant leakage and blocks contaminants from entering the bearing housing at the rotating shaft interface. A worn or hardened seal allows grease loss and dirt ingress, which accelerates bearing wear and can lead to drive-line noise or seizure. The seal is manufactured to the original geometry, matching the housing bore and shaft diameter so no adapter or shim is required during installation. Replace the seal whenever the cutterbar drive is disassembled, and ensure the sealing lip faces the lubricant reservoir.