Nick did pass the time by typing:
> It's the square rubber gromet that seals where the fuel pump is. I had a
> couple rot out every couple of years.. About 20$ at the dealer. Finally
> someone told me to coat the seal in vasoline and that one has lasted me much
> longer. Ya...will see...

Wonder if you could bed it in some gas resistant RTV or flange selant? Of course
that would make it a pain to get at later.