Washer for 1/2 inch BSP Fittings

This rubber sealing washer is for 1/2" BSP low pressure waterpipe threads. It is used with a variety of our items- particularly in situations in which pipe connections and taps or mini valves need to be joined to header tanks or drinkers. It is commonly used with our 1/2 inch BSP back nut.  NOT suitable for Gas- LPG or compressed air fittings. Approx Dimensions: 25mm Outside diameter x 20mm Inside diameter x 2.5mm (thick)