Hub Seal - 2-7/8 Wide 5

The Hub Seal - 2-7/8 Wide 5 from Winters is a precision-engineered inner wheel hub seal designed for high-performance racing and heavy-duty automotive applications. This seal is an essential component for maintaining bearing integrity and preventing fluid contamination in splined hub assemblies used in drag racing, circle track, and dedicated performance builds. If you're serious about protecting your wheel bearings under extreme load and high-speed conditions, this seal delivers the sealing performance required to keep your hub assembly dry and functional across countless heat cycles.

Built with a steel body and Viton lip material, the Hub Seal features a 3.978-inch outer diameter, 3.253-inch inner diameter, and 0.379-inch thickness—dimensions engineered to fit Winters 2-7/8-inch splined tube wide 5 hub housings with zero tolerance. The Viton lip seal provides superior resistance to heat, oil, and grease while maintaining consistent sealing pressure across operating temperature ranges from street to strip. The lip design creates a dynamic seal against the rotating shaft, effectively blocking bearing grease from migrating outward while preventing dirt and moisture ingress that would compromise bearing longevity and performance.

This seal is ideal for racers, fabricators, and performance shops building or maintaining Winters quick-change rear ends and splined hub assemblies on competition vehicles. Installation requires proper hub setup and alignment; the seal must seat fully against the hub bore without damage to the Viton lip. Compatibility is specific to Winters 2-7/8-inch wide 5 splined hubs, making correct identification essential before purchase. For best results, pair with quality bearing grease and inspect seals periodically during intensive racing seasons to ensure no leakage or bearing degradation occurs.