Dowty Self Centering Washers. 1/8" BSP, 1/4" BSP, 3/8" BSP, 1/2" BSP, 5/8" BSP, 3/4" BSP. 1" BSP,1 1/4" BSP, 1 1/2" BSP, 2" BSP. For Hydraulic Oil, Petrol, Diesel, Water, etc. Bonded Seal Washers. (Nitrilebutadiene or NBR, Nitrile is resistant to oil, fuel and other chemicals).
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