18mm Copper Sealing Washer for Banjo Bolt — Per Washer

An 18mm copper sealing washer designed for use with M18 banjo bolts. Used in pairs either side of the banjo eye, these washers create a leak-free seal between the banjo bolt and the port face. An essential consumable for any banjo fitting assembly — always replace with new washers when disturbing or reusing a banjo bolt connection.

Key Specifications

• Size: 18mm (suits M18 banjo bolts)
• Material: Copper
• Sold: Per washer
• Application: M18 banjo bolt sealing on power steering, fuel, brake, and oil line connections

Why Copper?

Copper washers are soft and malleable, allowing them to deform slightly under torque to create a reliable metal-to-metal seal. They are widely used in automotive fluid systems for their excellent sealing properties and resistance to heat and fluid degradation. Copper washers are a single-use item and should always be replaced rather than reused.

Fitment & Compatibility

Suitable for use with M18 banjo bolts, including our M18x1.5 anodised alloy banjo bolt. Two washers are required per banjo connection. Always use new washers when assembling or reassembling banjo fittings.

Why Choose BRT Motorsport?

Quality consumables for performance builds. Complete your banjo fitting assembly with the correct sealing washers from BRT Motorsport.