O-Ring 2-028 Buna

The O-Ring 2-028 Buna from Penske Racing Shocks is a precision elastomer seal component engineered for high-performance suspension systems and shock absorber assemblies. Built to withstand the demanding pressures of motorsport and modified vehicle applications, this o-ring serves as a critical internal seal that maintains hydraulic integrity under extreme compression and temperature cycles. Whether you're rebuilding a custom shock absorber, servicing a performance suspension kit, or maintaining a track-prepared vehicle, having OEM-equivalent replacement seals on hand is essential for reliable operation.

Constructed from Buna-N (nitrile) rubber, the O-Ring 2-028 Buna offers excellent chemical resistance to mineral oils, synthetic fluids, and brake fluid commonly found in shock absorber assemblies. The Buna material composition provides superior sealing performance across temperature ranges typical in high-speed driving and aggressive driving conditions, resisting degradation and maintaining elasticity under sustained heat. At just 0.03 lbs and measuring 1.95 by 0.3 by 3.05 inches, this compact seal is specifically dimensioned for Penske Racing Shocks internals, where precision fitment directly impacts damping consistency and prevent fluid weepage.

Mechanics and suspension tuners working on road racing, autocross, and street-modified vehicles benefit from stocking this replacement seal for preventive maintenance and shock rebuilds. Installation requires careful handling to avoid pinching or twisting during assembly—proper seating ensures the damper functions as intended without internal leaks that would compromise ride quality and handling. This OEM part is compatible with Penske Racing Shocks models that employ this seal size; verify your shock model and internal specifications before ordering to ensure correct fitment.