Best fuel line thread sealant?

[Willie Makeit]

Teflon tape is NOT a sealer. It's purpose is to lubricate the threads in order to torque to proper specs without galling and to achieve a mechanical seal with the threads.

[davepl]

Originally Posted by Willie Makeit

Teflon tape is NOT a sealer. It's purpose is to lubricate the threads in order to torque to proper specs without galling and to achieve a mechanical seal with the threads.

"Thread seal tape (also known as PTFE tape or plumber's tape) is a polytetrafluoroethylene (PTFE) film tape commonly used in plumbing for sealing pipe threads."

You might be correct about how YOU use use, but it's still properly called PTFE Thread Seal Tape. I've been calling myself a plumber for over 40 years and selling sealants longer than that!

The tape is intended to seal in SPECIFIC applications, though in reality most applications people try to use it on here wind up being a flare or compression seal that the threads have no role in doing anything except clamping anyway.

So you're right that people here shouldn't call it thread seal the way they use it, but it still is called that, and particularly in LPNG, it's meant to seal in some cases.

[Willie Makeit]

Originally Posted by davepl

"Thread seal tape (also known as PTFE tape or plumber's tape) is a polytetrafluoroethylene (PTFE) film tape commonly used in plumbing for sealing pipe threads."

You might be correct about how YOU use use, but it's still properly called PTFE Thread Seal Tape. I've been calling myself a plumber for over 40 years and selling sealants longer than that!

The tape is intended to seal in SPECIFIC applications, though in reality most applications people try to use it on here wind up being a flare or compression seal that the threads have no role in doing anything except clamping anyway.

So you're right that people here shouldn't call it thread seal the way they use it, but it still is called that, and particularly in LPNG, it's meant to seal in some cases.

regardless of what you call yourself, Teflon tape is NOT a sealant. I'm not a plumber & not gonna get into a pecker measuring contest with you, but I do work for NASA and know a lil' bit about sealing pneumatic and hydraulic systems, specifically on flight hardware.

[special-K]

Originally Posted by Willie Makeit

Teflon tape is NOT a sealer. It's purpose is to lubricate the threads in order to torque to proper specs without galling and to acheive a mechanical SEAL with the threads.

Alright, I sure don't want to hop in this or see it continue on. But in the quote above it sure looks like a contradiction. Ok, so it's a component used in creating a seal. Is the tape a seal? No. Are the treads a seal? No. But Teflon tape used on threads creates a seal. The fact is it doesn't hurt to use it in this case, even if it's belts & suspenders. What is really needed is a correct fuel line.

[Sheepdip]

Originally Posted by Willie Makeit

Teflon tape is NOT a sealer. It's purpose is to lubricate the threads in order to torque to proper specs without galling and to achieve a mechanical seal with the threads.

^^^^^^^^^^^This is 100% correct^^^^^^^^^^^^^^^^