Viton Valve Seals - LS1 Steel Jacketed

Viton Valve Seals - LS1 Steel Jacketed by COMP CAMS are precision engineered valve stem seals designed for GM LS-series engine rebuilds and performance upgrades. These positive-stop seals are essential for controlling oil consumption, preventing valve guide wear, and maintaining proper combustion chamber integrity during high-performance operation. Whether you're restoring a stock LS engine or building a modified powerplant, this set of 16 seals ensures reliable sealing across your engine's intake and exhaust valves.

Each seal features a Viton elastomer core bonded to a steel jacket, delivering superior heat resistance and durability compared to standard rubber seals. The steel jacket provides structural support and prevents extrusion under the high spring pressures found in LS-series engines, while Viton material withstands sustained temperatures and chemical exposure from modern synthetic oils. Engineered for 8 mm valve stems with 0.494 inch guide bores, these seals maintain a consistent, positive stop design that prevents excessive valve stem movement while allowing smooth operation of the valve train.

Engine builders, restorers, and performance technicians rely on COMP CAMS valve seals for LS1, LS2, LS3, LS6, and other GM Gen III/IV small-block engines. Installation requires proper valve spring removal and seal seating tools to ensure correct positioning on the valve guide shoulder. This complete set of 16 seals covers a full eight-cylinder engine, eliminating the need for separate ordering and ensuring matched specifications across all valve positions for balanced performance and longevity.