Yes, they say, and so do I. The stuff is amazing, I have some and have used it. Gasoline, even with ethanol won't touch it. It works.
Hi all! Sorry to dig this up again. Bad form, especially as a new member - but I read through this, and holding my tongue may very well cause me an aneurysm. dustyrustee, you should have taken that bet. I have a roll of that yellow telfon it in my toolbox, too. It don't say 'gasoline', it says 'gasline' It's the exact same PTFE as the blue roll, just a higher density tape.
Thought I would add this in case anyone decides to use it for their oxygen cylinders or torches. Normal PTFE tape is not safe with oxygen as it contains oil and may spontaneously burn with an explosive force.
Old post I know but I use this. https://www.permatex.com/products/t...nts/permatex-high-performance-thread-sealant/
Oh Man ,I wanted to see if sinistercustom was still taking the subject personally , damn these old threads .LOL
I have always felt that this was a myth. I have used teflon tape on fuel fittings for years, and it has never been an issue. So, I did what was suggested earlier in this thread. I took some tape and put it in a cup of gasoline. I let it sit overnight, and the gas had no effect on the tape.
I just looked on the side of a roll of yellow teflon tape and it says "for use with all hydrocarbon fuels" - which is gasoline.
I have used a wax like paste that Aircraft Spruce sells. I think this is it, as the can that I used for the past 10 years is still half full and at my previous job. http://www.aircraftspruce.com/pages/cs/sealants/titesealit.php
Tape should never be used in aviation apps... pieces have broke off, entered the carb and causing fuel stoppage. As you might imagine there is no pulling off to the side of the road.in an aircraft.
Since coming out of retirement, I work in an industry dealing with the transporting of hydrocarbons. The yellow tape is accepted by the FRA as a sealant, as well as Gasoila mentioned above. This shit's gotta be sealed, period. If a leak is detected, someone's sack is one the line. Real bad things can happen...