Donut petcock washers 1/2" ID copper neoprene sealing washer seals seal set *
You will get the 2 brand new sealing washers as pictured. These are good for problematic petcocks that leak, and very good for fiberglass gas tanks. When all else fails use one of these per petcock for a perfect seal, and keep your garage from smelling like a gas station. The material is copper and neoprene, the ID of these are 1/2" the thickness is 3/8" , the OD is 3/4" so these will work well for British petcocks.
Brand: STEADFAST CYCLES
Part Brand: STEADFAST CYCLES
Manufacturer Part Number: SC-0900
Surface Finish: COPPER AND NEOPRENE