O-Ring for Jam Nut Spring Slider

The WEHRS MACHINE O-Ring for Jam Nut Spring Slider (Part #WM251-JNO) is a precision elastomer seal component engineered specifically for spring slider assemblies used in performance suspension and driveline systems. This black rubber o-ring features a 2.25-inch inner diameter, 2.438-inch outer diameter, and 0.094-inch cross-sectional thickness—dimensions that establish a critical interference fit within jam nut spring slider housings where reliable sealing and vibration dampening are essential to system integrity.

In high-performance racing, off-road, and heavy-duty vehicle applications, spring sliders manage axial loads and rotational forces that would otherwise compromise differential and drivetrain components. The o-ring's precise cross-section works in conjunction with the jam nut assembly to maintain a consistent seal under thermal cycling and extreme torque conditions. The elastomer compound resists petroleum-based fluids, heat degradation, and compression set—critical properties for components that operate in gear oil baths where temperature and chemical exposure demand durable sealing. At just 0.01 lbs, this component delivers functional performance without adding measurable system mass.

Technicians restoring or rebuilding performance differentials, limited-slip units, and independent suspension systems specify OEM-equivalent components like this WEHRS MACHINE o-ring to ensure the assembly performs to original specification. Whether you're maintaining a track car, rebuilding an off-road suspension system, or servicing a high-output drag racing platform, correct seal replacement prevents differential fluid leakage and maintains the preload characteristics of the slider assembly. WEHRS MACHINE is recognized for precision drivetrain and suspension component manufacturing—this o-ring reflects that commitment to exact dimensional and material standards that prevent comebacks and ensure long-term reliability under demanding conditions.