This metal gasket seals the joint between two components on the header of a grain harvester. It prevents fluid or debris leakage at the mating surface, maintaining system pressure and cleanliness in the header assembly. A compromised gasket can allow contamination to enter the hydraulic or lubrication circuit, leading to accelerated wear on downstream components. The gasket is formed to match the original seal groove geometry, ensuring proper compression when the joint is torqued to specification.