Best +Lloyd oil pump Tank/Pump gasket. the “ L56 Joint washer”
Fits the more usual standard 1 inch” type of pump with the tube style oil sight glass, which went into production circa 1914,and the later style with the 36mm diameter disc type sight glass that went into production circa 1922/1923
Three holes” footprint to take the three off 3BA fixing screws
Thickness 0.75mm
Material. Novus
(Copes with commercially available standard lubricating motorcycle oils that are on general sale to the public)
There were some variations in the footprint over the decades for some makes of British motorcycle (eg. some Sunbeam models used two affixing screws and not three screws etc) so please check that the footprint on your pump looks basically like this