10-07-2022, 08:51 PM
You can buy sheets of neoprene which is fuel resistant, not sure about methanol but it copes with almost all solvents. I fit leather washers to the caps on the wing tanks and have a leather washer on the BSA scuttle mounted tank. Seems to work but I certainly wouldn’t use chamois as it is a much more open-grained type of skin (which is why it is used to soak up water…)