15815 – Adaptor, AN-8 Male to M18 x 1.5mm, Including Stainless Dowty Washer and Viton O Ring, Black | Motorsport Fuel Pump Specialist Supplier | Protec Fuel Pumps
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Amazon.com: Earls 178112ERL Dowty Seal 0.75" 8 AN Fitting O-Ring, (Pack of 2) : Automotive
O Ring Seals Brochure | Dowty Seals | Dowty Heritage