Formulated specifically for metal, tapered pipe thread fittings, High Performance Thread Sealant replaces Teflon tape and pipe dopes.
If you're looking for a thread sealant to replace Teflon tape in propane systems, this is it. High Performance Thread Sealant is not degraded by petroleum products.

This product seals and secures metal pipes and fittings by filling the space between threaded metal parts. High Performance Thread Sealant cures to form a pliable seal, preventing leakage caused by vibration loosening, tape shredding, solvent evaporation, damaged threads, and temperature cycling.
Designed for low and high pressure applications, High Performance Thread Sealant seals instantly for on-line low pressure testing. When fully cured, it seals to the burst strength of most piping systems.
The high lubricating properties of Permatex High Performance Thread Sealant eases assembly and prevents galling of the threads.

Not a threadlocker. If necessary, for system repairs, parts may be disassembled with basic hand tools.

Suitable for use on NPT fittings used in LPG (propane) systems
Contains PTFE to lubricate as it seals
Cures rapidly to withstand up to 10,000 psi
Prevents galling
Protects mated threaded areas from rust and corrosion