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

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

Post by Jim Ed » Sun Feb 26, 2017 12:56 pm

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
https://www.amazon.com/dp/B004MYFPAK?re ... _dp_asin_1

but, I am now considering using this:
Permatex 80633 Thread Sealant with PTFE, 16 oz.
https://www.amazon.com/Permatex-80633-T ... iquid+ptfe
..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 » Sun Feb 26, 2017 4:20 pm

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.
I, for one, regularly embrace our new robot overlords, as I am the guy fixing the robots...

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

Post by sideshow » Sun Feb 26, 2017 9:01 pm

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 » Tue Feb 28, 2017 2:25 pm

I decided on using this Millrose 70885 Monster Roll PTFE Thread Seal Tape
https://www.amazon.com/Millrose-70885-M ... ue+Monster
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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