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Gasoline Fittings Thread Sealant
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T.R. Bauer



Joined: 17 Nov 2007
Posts: 1726
City/Region: Wasilla
State or Province: AK
C-Dory Year: 1993
C-Dory Model: 22 Cruiser
Vessel Name: C-Whisperer
PostPosted: Mon Mar 07, 2016 8:34 am    Post subject: Reply with quote

I'm at a loss as to why you'd use anything at all on it. I should not be necessary. And it if is, you probably need a new fitting.
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BrentB



Joined: 15 Jul 2006
Posts: 4419
City/Region: Greenwood
State or Province: IN
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PostPosted: Mon Mar 07, 2016 10:19 am    Post subject: Reply with quote

I agree.

Only have used the Permatex aviation sealant shown in the previous message for fuel connections (tank pick up elbow, ASV threads, external fuel filter fittings) and bought a tube of Leak-Lock but have not used it

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TyBoo



Joined: 23 Oct 2003
Posts: 5310
City/Region: Warrenton
State or Province: OR
C-Dory Year: 1996
C-Dory Model: 25 Cruise Ship
Vessel Name: TyBoo
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PostPosted: Mon Mar 07, 2016 11:36 am    Post subject: Reply with quote

T.R. Bauer wrote:
I'm at a loss as to why you'd use anything at all on it. I should not be necessary. And it if is, you probably need a new fitting.


Some of us worry too much. Laughing

Brass fittings conform very well to the hole they are stuck in and rarely need any help from a sealant.

Steel in steel fittings are generally good dry, but the lubrication and corrosion resistance of a good sealant is a good idea.

Stainless fittings can gall easy and they don't conform to a poor fit very well so a good lubricant/sealant is always recommended.

It is easy to over tighten a tapered thread fitting screwed into aluminum or plastic so a good sealant that remains somewhat flexible gives peace of mind and a lasting seal even as the material relaxes.

When the fitting and the hole it goes into are different metals, a good sealant should be used if only as a corrosion inhibitor, especially on a boat.

As long as it is applied sparingly and above the end of the threads so it does not get inside of the lines, a good sealant should always be used if only as a thread lubricant.

Teflon tape is good enough for water joints, but I don't like it for much else. It is very easy to get strings of it into the product stream.

Anyway, that's what I came to believe after all those years at a paper mill fixing leaky stuff. The first few years I was often fixing my own leaks, so once I discovered how good that Loctite 567 stuff worked I never bothered using anything else.

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