sealing cork float against gasoline - how to...

Somebody recommended Ambroid in a mailgroup recently. I can't attest to it for myself, having long ago given up on cork and gone to a brass float.

Go to a local hobby store and get 'hot fuel proof clear dope"

Jerry in NC

I believe that the original treatment was shellac.

Orval equivocated:

That was in them old glory days when gasoline did not contain volatile additives.

I've had good luck with polyester fiberglass resin. This is on floats used with a wire sticking up to see fuel level. I have dipped them in resin and then shook off the excess. They don't seem to float any lower and the resin resists auto fuel.

Cheers:

Paul NC2273H

I don't know if there is enough alcohol in your auto gas, but alcohol is a solvent for shellac.

Ed Sullivan

Ed,

I have used "Indian Head" gasket shellac with good results in the past. Whatever sealant is used, it should be tested prior to installation on the airplane. Buy a bottle of decent wine and drink it. When the cork is dry (yes, you must buy a wine with a real cork in the bottle) coat it with the sealant to be considered and submerge it, after curing, in the fuel to be used and watch it for a week or more before deciding.

O-ring

Especially alcohol, from what I read in a recent thread in this gorup.

Peter

snip ...

Use two component epoxy paint (usually for coating the inside of ..... the tank) can be had at your web/local restore shop.

Eugenio