What Type of Sealant Should I use on my Fuel Line Fittings?

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Jim Ed
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Joined: Tue Aug 31, 2010 5:14 am

What Type of Sealant Should I use on my Fuel Line Fittings?

Post by Jim Ed »

What Type of Sealant Should I use on my Fuel Line Fittings?

I was considering:
LA-CO 44094 Slic-Tite PTFE Gas Line Pipe Thread Tape, Premium Grade, [260" Length, 1/2" Wide], Yellow


but, I am now considering using this:
Permatex 80633 Thread Sealant with PTFE, 16 oz.

..or this:

Permatex High Performance Thread Sealant
https://www.youtube.com/watch?v=3SRebCbn-xA
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Piledriver
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Re: What Type of Sealant Should I use on my Fuel Line Fittings?

Post by Piledriver »

Usually none of the above...
What exactly is the application?

I generally prefer anaerobic sealants vs. std pipe dope or tape.

On NPT threads I use Locktite anaerobic thread sealer w/Teflon, 565, 567 for high strength, available in many sizes, suggest mail order as local parts stores get stupid $$ for a 50ml tube.
This sets, and is rated for 10K psi.
It also works as a low-med strength thread locker.
Addendum to Newtons first law:
zero vehicles on jackstands, square gets a fresh 090 and 1911, cabby gets a blower.
EZ3.6 Vanagon after that.(mounted, needs everything finished) then Creamsicle.
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sideshow
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Joined: Mon Oct 27, 2003 11:00 am

Re: What Type of Sealant Should I use on my Fuel Line Fittings?

Post by sideshow »

Please define fittings?

On the solex straight/smooth barbs I favor rolling a file over the inserted end followed by a light smear of J-B weld over the new rough. From what I hear this is the same technology NASCAR uses on threaded fittings...yikes.
Yeah some may call it overkill, but you can't have too much overkill.
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Jim Ed
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Re: What Type of Sealant Should I use on my Fuel Line Fittings?

Post by Jim Ed »

I decided on using this Millrose 70885 Monster Roll PTFE Thread Seal Tape

It is supposed to be gasoline resistant.
Also I plan to use a fuel filter between the fuel pressure regulator and the carb to catch any little pieces of the tape that could possibly clog up the carb.
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