Tank sealing

[threepot]

Has anyone used 3M's  Scotch-Clad 776 to seal a plastic tank? Its used in the aircraft industry. Avail on ebay,tempted to give it a try?

[Joe Bates]

Used JB Weld Marine on a hole that happened while fixing spinning tank nuts.
It's been a few months and when I say hole I mean hole.
I let it cure for 2-3 days before adding fuel.

[London_Phil]

I assume you are just "lining" the existing tank, not repairing a leak?

These guys have a respected line of products.

http://www.caswelleurope.co.uk/gastank.htm

I've not used them, but they are a respected name  in the classic car arena