Seal Bell Viton (For .156 Wall Tubes)

The Seal Bell Viton for .156 Wall Tubes (Winters MPN 7293V) is a precision side bell seal engineered for closed-tube differential housings and axle assemblies used in performance, racing, and heavy-duty automotive applications. This inner lip seal maintains fluid integrity under extreme operating conditions, preventing gear oil leakage while accommodating high-speed rotation and thermal cycling. Technicians and fabricators choose this seal when OEM reliability and consistent performance are non-negotiable.

Constructed from durable steel with a Viton elastomer lip, this seal combines chemical resistance and temperature stability across a wide operating range. The 2.750-inch outer diameter and 1.950-inch inner diameter create a precise sealing interface, while the 0.470-inch thickness ensures structural integrity under load. Viton material excels in environments exposed to synthetic gear oils, extreme heat, and aggressive chemicals—conditions that degrade standard rubber compounds. The compact 0.09 lb weight reflects the seal's efficient design without compromising durability or sealing effectiveness.

This side bell seal is ideal for Winters quick-change differentials, custom rear axle assemblies, and race-prepped vehicles where fluid retention and component longevity directly impact performance and reliability. Installation requires precise bore fitment—verify tube wall thickness and bell seat dimensions before ordering. Technicians working on drag racing, circle track, or street performance builds rely on Winters seals to prevent mid-event failures and costly downtime. Proper installation with clean bore surfaces and correct assembly torque ensures maximum seal life and leak-free operation.