This oil seal is an original component for the header of a combine harvester. It sits on a rotating shaft to retain lubricant and exclude contaminants from the bearing housing. A worn or hardened seal allows grease loss and dirt ingress, which accelerates bearing failure and can lead to shaft scoring. The seal is manufactured to the same lip geometry and material specification as the original assembly, ensuring it seats correctly in the housing bore and maintains the designed contact pressure against the shaft. On installation, inspect the shaft surface for grooves or pitting and replace the seal if any damage is found.