Cometic Rear Main Seal for Chevrolet Small Block

Cometic rear main seals for Chevrolet small block V8 engines are engine crankshaft seals (also called rear main crank seals). They keep oil from leaking out of the back of the crankshaft, which helps maintain oil pressure and protect internal engine components. They suit engine rebuilds, routine maintenance, and street or race builds.

Key Features:

• Cometic says its front and rear main crank seals are made from top-quality materials and are suited to all types of environments
• Each seal is designed to meet or exceed OEM quality
• Made for Chevrolet small block applications, including Gen-1 small block V8 engines
• Available in rubber and Viton (a fluoroelastomer) materials, depending on the part number. Viton offers high heat resistance, chemical resistance, and durability
• Split-style, dual-lip designs are offered, and some versions are suitable for both wet and dry sump systems

Cometic builds its gaskets and seals to order for performance and professional engine builders. Use the options on this page to choose the seal that fits your engine combination.