Oil sump gaskets create a static seal between the oil pan and the engine block, preventing oil leakage. These gaskets are positioned at the lowest point of the engine’s oil system. Common materials include cork, rubber, paper, or multi-layer steel (MLS) depending on engine design and performance requirements. Precise sealing is critical to maintain oil pressure and lubrication. Gasket designs often incorporate embossed beads or coatings to enhance sealing and conform to uneven mating surfaces. Proper torque sequencing during installation is essential for long-term reliability.