Bonded Seal Washers M24 Metric, Pack of 25 - Dowty Oil Sealing Washer, Metal Rubber Sump Plug Gasket, Drain Plug Seal, Hydraulic

• LEAK-PROOF BONDED SEAL – Steel outer ring with a bonded nitrile rubber inner seal that compresses as the bolt is tightened to seal oil, fuel, water, air and hydraulic fluid, without thread tape or liquid sealant.
• SELF-CENTRING FIT – The rubber inner locates the washer squarely on the bolt or plug for an even, consistent seal every time and stops it slipping off-centre during fitting.
• IDEAL FOR OIL CHANGES – Fits engine sump and drain plugs to reseal the sump when draining and refilling engine oil, a direct replacement for old or damaged washers.
• WIDE RANGE OF USES – Suited to hydraulic and pneumatic fittings, banjo bolts, fuel lines, compressors, gearboxes, and general workshop and plumbing jobs.
• METRIC SIZING – Made to metric thread sizes with a steel body and an oil-resistant nitrile rubber seal built for a durable, secure fit.

Bonded seal washers, also known as Dowty washers, create a reliable leak-proof seal under bolt heads, banjo fittings and threaded plugs. Each washer is a steel outer ring with a nitrile rubber inner seal bonded permanently in place. As the bolt is tightened, the rubber element compresses against the mating face to seal oil, fuel, water, air and hydraulic fluid — with no need for thread tape or liquid sealant. The self-centring design locates the washer squarely on the bolt or fitting, so it seats evenly and seals consistently rather than slipping off-centre as it's tightened. This makes them a common choice on engine sump and drain plugs during oil changes, as well as across hydraulic and pneumatic fittings, fuel systems, compressors, gearboxes and general workshop plumbing. Manufactured to metric thread sizes and supplied ready to fit as a direct replacement for worn, damaged or missing washers.