Just a little bit of advice. I have been using this stuff on pipe threads forever. Its made to seal the joint, PROVIDE LUBRICATION DURING ASSEMBLY AND DISASSEMBLY, work well in high temps, and disassemble easily.
It will PREVENT GALLING when you use steel fitting in aluminum bodies.
Do not use PFE tape. Little pieces can end up everywhere inside the system you are trying to seal. This is the same stuff, PFE, but will not breakup.
Perfect for steel brake fitting into a Wilwood aluminum caliper. Use just a little dab on the male threads and the assembly process will spread it all the way around the fitting.
Don't get mixed up with thread locker. Don't use thread locker for brake pipe thread into caliper bodies...........EVER.
https://www.jbtoolsales.com/loctite-37396-pst-565-thread-sealant/?gclid=CJq3rv6xjdECFQ-1wAodOZkIEg