We had seen that there was no seal between the cap and the fuel filler flanges, so we thought there might be a potential for fuel to leak when cornering and also via vapour leakage. So Mark sourced some CAR FUEL OIL Nitrile Rubber Gasket Material 3mm from eBay that would do nicely to make some seals. We made one for the fuel cap itself to seal to the flange and one to seal the fuel filler extension pipe flange for when this would be attached to the lower section when the roof is fitted.

Mark also bought some O Rings for the second flange, which were 84mm ID with a 3.5mm cross section.