Viton Valve Seals - 5/16 Steel Body .500

Viton Valve Seals - 5/16 Steel Body .500 from COMP CAMS represent a precision-engineered solution for engine builders, rebuilders, and performance enthusiasts who demand reliability in critical valve train applications. These positive-stop valve stem seals are engineered to prevent oil migration down the valve stem while maintaining consistent oil film distribution to valve guides. Whether you're restoring a classic engine, building a high-performance race motor, or maintaining OEM specifications, this set of 16 seals delivers the durability required for serious engine work.

The Viton seal material provides superior temperature resistance and chemical compatibility compared to standard rubber compounds, making these seals ideal for extended engine runs and high-heat conditions. The positive-stop design prevents over-compression of the seal, eliminating premature wear and maintaining a predictable sealing interface with the valve guide. Designed for 5/16-inch valve stems with a 0.500-inch guide diameter, the steel body construction ensures structural integrity under load while the Viton elastomer creates a dynamic seal that accommodates normal valve stem movement without leakage. This combination of materials and engineering means longer seal life and reduced oil consumption across your engine's entire valve train.

Mechanics and engine builders rely on COMP CAMS valve seals for stock restorations, modified engines, and original equipment replacements where OEM fitment and performance matter. The set of 16 seals provides complete coverage for engines with eight valves per head, or two complete heads on modern configurations. Installation is straightforward during valve train assembly or head rebuild operations, and these seals are compatible with both roller and flat-tappet cam systems. For anyone seeking to eliminate blue smoke, reduce oil pan consumption, and extend engine longevity, Viton Valve Seals - 5/16 Steel Body .500 deliver measurable results at a fair price point.