Copper Washer, 11.2mm ID, 18mm OD

Copper Crush Washer – 11.2 mm ID × 18 mm OD The 4LifetimeLines® Copper Crush Washer (11.2 mm inner diameter, 18 mm outer diameter) is engineered for a perfect seal on banjo bolts, caliper fittings, and hydraulic connections. Made from high-purity copper, this washer deforms under torque to fill micro-imperfections, creating a permanent, leak-proof joint that’s essential for safe, consistent braking performance. Key Benefits Precision Fit: 11.2 mm ID for standard banjo bolt shanks and 18 mm OD for full sealing coverage. Corrosion Resistance: Premium copper resists brake-fluid vapors, moisture, and road salt without pitting. Heat Dissipation: Excellent thermal conductivity helps maintain stable hydraulic pressure. One-Time Crush Seal: Compresses under specified torque to eliminate leaks—no additional sealants required. Service Ready: Replace with every brake service interval for consistent, leak-free performance. Installation & Usage Clean Mating Surfaces: Remove residue, old gasket