RaceFlux Dowty Bonded Sealing Washer, for M20, 1/2" BSP, 13/16" Threads

Seal a straight thread at the flange: this Dowty bonded sealing washer pairs a metal outer ring with a bonded rubber sealing lip, sealing under a fitting's flange as it tightens. Sized for M20, 1/2" BSP, and 13/16" threads — the correct way to seal parallel threads that don't seal on the threads themselves.

Key Features

• Bonded metal ring with rubber sealing lip
• Fits M20, 1/2" BSP, and 13/16" threads
• Cleaner and more reliable than thread sealant

Fitment & Compatibility

• Common uses: oil filter and cooler adapters, larger BSP ports, drain plug sealing