Subject: Fuel tank cleanout ports.
From: Bruce in Alaska

In article ,
"Keith" wrote:

Permatex #2, stays flexible. A gasket would be even better.

or both, gasket smothered in Permatex #2......

Bingo!!!

Except I wouldn't "smother" it in Permatex.
I'd just neatly cover both sides with it. :-)

Capt. Bill