Description
Copper Crush Washer – 9/16″ ID × 21 mm OD
The 4LifetimeLines® Copper Crush Washer (9/16″ inner diameter, 21 mm outer diameter) provides a precision, permanent seal for brake banjo bolts and hydraulic fittings. Engineered from high-purity copper, this washer deforms under torque to fill microscopic surface imperfections, ensuring a one-time, leak-proof joint critical to safe braking and hydraulic performance.
Key Benefits
Accurate Fit: 9/16″ (14.3 mm) ID perfectly accommodates standard banjo bolt shanks, while the 21 mm OD covers the mating surface for complete sealing.
Corrosion Resistance: Premium copper alloy resists brake-fluid vapors, salt, and moisture for long-term durability.
Heat Dissipation: Excellent thermal conductivity helps carry heat away from fitting junctions, maintaining stable hydraulic pressure.
One-Time Crush Seal: Washer compresses under specified torque, creating a permanent, leak-free bond with no additional sealants.
Service-Ready: Replace at each brake service interval to maintain reliable sealing performance.
Installation & Usage
Clean Mating Surfaces: Remove any old gasket material, dirt, or corrosion from both bolt face and banjo fitting.
Position Washer: Slide the copper washer onto the banjo bolt, ensuring it sits flat against the fitting.
Torque to Spec: Fasten the bolt to manufacturer-recommended torque; the washer will crush and conform to both surfaces.
Inspect for Leaks: After system bleeding, pressurize and check for any seepage around the joint.
Ready to ensure leak-free fittings?
Add the 9/16″ × 21 mm Copper Crush Washer to your cart now and lock in precision sealing for every brake and hydraulic connection.
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