sealing cork float against gasoline - how to...

In article ,
"Jerry" wrote:

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

Jerry in NC

"jt" wrote in message
...
Got a pair of fuel-level senders and the cork floats have lost some of
whatever it was that was painted on them. These will be in tanks with
automotive gasoline. What should I use to seal them?




I believe that the original treatment was shellac.

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Orval equivocated:

I believe that the original treatment was shellac.



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

Larry Smith wrote:

Orval equivocated:

I believe that the original treatment was shellac.



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

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

Peter

Orval Fairbairn wrote in message ...
In article ,
"Jerry" wrote:

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

Jerry in NC

"jt" wrote in message
...
Got a pair of fuel-level senders and the cork floats have lost some of
whatever it was that was painted on them. These will be in tanks with
automotive gasoline. What should I use to seal them?




I believe that the original treatment was shellac.

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

Ed Sullivan

On 14 Jul 2003 12:08:54 -0700, (Ed Sullivan) wrote:

Orval Fairbairn wrote in message ...
In article ,
"Jerry" wrote:

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

Jerry in NC

"jt" wrote in message
...
Got a pair of fuel-level senders and the cork floats have lost some of
whatever it was that was painted on them. These will be in tanks with
automotive gasoline. What should I use to seal them?




I believe that the original treatment was shellac.

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