Does anyone know what is used for the gasket on a diesel fuel tank inspection cover? Have tried neoprene, but it swells up like blancmange when you get diesel on it.
cork can break up and enter the fuel system.
If you go to a rubber suplier you can obtain a sheet of high nitrile grade rubber or more expensivly Viton.
...in my yacht since -77 and stood the test of time, still flexible and strong after 24 years in diesel!
Last year I cleaned the tanks and of course went for cork again.
I can hardly beleive it will break up.
Cork has been used since ancient times as gasket material in engines and tanks.
Cork sold for gaskets is composed of cork granules in an elastomeric matrix, either natural rubber, nitrile or neoprene. The nitrile-based version will last almost indefinitely in diesel.