Copper Crush Washer – 3/8″ ID × 5/8″ OD

The 4LifetimeLines® Copper Crush Washer (3/8″ ID × 5/8″ OD) delivers a precision seal for banjo bolts, caliper fittings, and hydraulic connections in your brake system. Made from high-purity copper, this washer compresses under torque to fill surface irregularities, creating a one-time, leak-proof joint essential for safe and reliable braking performance.

Key Benefits

Exact Dimensions: 3/8″ inner diameter and 5/8″ outer diameter for a perfect, snug fit.

Corrosion Resistance: Copper alloy withstands moisture, brake-fluid vapors, and road salt without pitting.

Superior Heat Conductivity: Efficiently dissipates heat from fittings to maintain consistent hydraulic pressure.

One-Time Crush Seal: Deforms under specified torque to seal micro-gaps, preventing fluid leaks.

Durable Performance: Maintains sealing integrity through multiple service intervals when replaced and torqued to spec.

Installation & Usage

Clean Surfaces: Remove old washer material and debris from the mating surfaces.

Position Washer: Place the copper washer onto the bolt or fitting.

Torque to Spec: Tighten the bolt to the manufacturer’s recommended torque—the washer will crush and seal.

Verify Seal: After bleeding the system, inspect under pressure to confirm there are no leaks.

Ready to secure every brake fitting?
Add the 3/8″ × 5/8″ Copper Crush Washer to your cart now and achieve leak-free, precision sealing every time.