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Teflon tape and gasoline

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L G[_27_]

L G[_27_] is offline

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First recorded activity by BoatBanter: Mar 2011

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Teflon tape and gasoline

wrote:
On Wed, 02 Mar 2011 19:39:29 -0500, Gene
wrote:

On Wed, 02 Mar 2011 19:25:54 -0500, wrote:

On 3/2/2011 5:41 PM, Gene wrote:

On Tue, 01 Mar 2011 19:59:01 -0500, L wrote:

Google results show differing opinions. Has anyone used Teflon tape
without success on a fuel line thread?

TIA,
Larry

FIRST and FOREMOST.... teflon ONLY works on TAPERED threads. If it
isn't a tapered thread.... forget the teflon (or any other sealant..
fix what is wrong).

There are different formulations of "teflon" for different
applications. For fuel, a "non-white" tape is probably called for.
Don't use the wrong kind. Not all tapes are created equal.

Don't put ANY tape on the first 1-2 threads.

There are semi-liquid thread sealants that are better than the tape.
Globs of pipe dope don't seal better; don't put pipe dope on the first
1-2 threads.

I might be wrong but aren't you supposed to use double flared on metal
fittings? I don't think compression or pipe thread is allowed.

You will see a lot of tapered pipe threads, AN flares, and SAE
flares.... maybe even a bubble flare!

No compression fittings, but if high pressure (fuel injection), maybe
a double flare...

Where I have the threaded fittings are hose barbs into the tank and on
the water separator.

I have the barbs on the fuel line side. It's the separator I was asking
about. Even the two plugs for a two-engine system aren't flared.

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