Viton Valve Seals - 3/8 Steel Body .530

The COMP CAMS Viton Valve Seals - 3/8 Steel Body .530 (Part 515-16) are precision-engineered positive-stop valve stem seals designed for high-performance engine builds where reliable sealing under extreme conditions is non-negotiable. This set of 16 seals combines Viton elastomer construction with a steel body to deliver superior durability and sealing integrity in both naturally aspirated and forced-induction applications.

Built for 3/8-inch valve stems and 0.530-inch valve guides, these seals feature a positive-stop design that prevents over-rotation of the valve seal on the guide, maintaining consistent compression and reducing blowby. Viton elastomer resists high temperature cycling and chemical breakdown better than conventional rubber compounds, making these seals ideal for street performance engines, track builds, and competition applications where valve train temperatures regularly exceed 300°F. The steel body provides structural support and ensures the seal remains positioned correctly under transient load conditions during rapid throttle transitions and sustained high RPM operation.

Engine builders and cylinder head specialists rely on COMP CAMS valve seals as original equipment in small-block and big-block applications across domestic platforms. The set of 16 allows replacement of all seals in a typical V8 configuration, reducing inventory complexity and ensuring uniform sealing across all cylinders. Proper seal installation requires valve guide preparation and correct installed height verification according to COMP CAMS specifications to achieve the performance gains these seals are engineered to deliver.

COMP CAMS has been the performance standard in valve train components since 1976, with extensive use in professional racing programs, engine shops, and serious enthusiast builds. These Viton seals represent the reliability and engineering precision expected from a brand that has built its reputation on components that outlast and outperform in demanding environments.