Poly fuel tank advise?

[elgecko]

I have a poly fuel tank under the Cobra and the small bolts holding down the sender are threaded into the plastic. Is there a sealer or something that I could coat on the threads to make for a more "positive" holding power.
Of course it has to be fuel resistent. Dang little projects.
Thanks
Dave

[strictlypersonl]

I would use Loctite Aviation Gasket Sealer to seal both the threads and the gasket.

(Don't get it on your skin unless you're willing to wait a week for it to "wear" off.)

[elgecko]

Thanks
Will do a search on it.

[Bill Bess]

FYI
Poly tank issues: I have a plastic tank on my Hurricane and had continued sealing problems with the neoprene gaskets. Too tight, will squash the gasket out, especially with a slippery sealant.
Cure: Use a cork or thick paper gasket and a product called "Seal-All". The stuff is sold at most auto parts stores. It looks just like model airplane glue (clear) and works wonderful with gasolene and solvents.
I've used it for several small leaks were gasolene is involved.
Bill

[elgecko]

yes, I have a cork gasket. Will check out Seal-All also.
Thanks

[kitcarbp]

The fuel sender should be using a gasket and steel nut ring on the INSIDE of the hole cut out so you can properly tighten the bolts using a sealing/crush washer under the bolt head. It will leak and come loose repeatedly if you have threaded the bolts into the PP fuel tank material itself. I have also discovered that a great sealing crush washer to try on fuel tank flanges (depending on hole size and bolt shank diameter) that uses viton seals to seal around the shank of the bolt. They are called STAT-O-SEALS by Parker.
Check them out.
Pegasus Racing and others (Graingers, etc) sell these for many bolt sizes, designed for use in high pressure hydraulics, but with an encapsulated viton seal will work with fuels better than the plain nylon washers because it seals the shank of the bolt.