Teflon Tape!

[Al_C]

I'm tying up a few loose ends here. A big one is this slow leak I've had on my power steering reservoir. Mine is a bit unique (or so I'm told by the folks at Moroso) as it has pipe thread openings instead of nipple connections. Anyway, the threads were messed up (thanks to my less than expert ability the first time I installed it) so I pulled the tank and am cleaning up the threads with a tap. I don't know what tape I used last time, but it appears to have pretty much turned into goo.

Finally, we're getting to my question. Is there a specific teflon tape that I should use in an environment that includes power steering fluid? I have two rolls of the stuff: one I have no idea, and the other is "PTFE Thread seal tape MIL SPEC T-27730A". I'm hoping that I used the unnamed tape the first time and that the PTFE tape will work this time. Your thoughts and/or opinions?

https://thefactoryfiveforum.com/attachment.php?attachmentid=106879&d=1557264283

[NAZ]

Once you have repaired the threads, do yourself a favor and use a high quality thread sealant. Teflon tape is not a thread sealant, in fact there is no place in automotive for the use of Teflon tape -- leave the tape to the plumbers. Teflon tape has caused more problems than it has ever fixed when using it around automotive and hydraulic systems.

I've always had good luck with Loctite 564, it's a thread sealant and locker that will provide superior sealing and resist loosening. But there are others out there that work well too.

[JohnK]

Permatex high performance thread sealant is another good option:

https://www.permatex.com/products/thread-compounds/thread-sealants/permatex-high-performance-thread-sealant/

[cnutting]

X2 on NAZ's suggestion

[edwardb]

X3. Ditch the tape. I've always used Permatex thread sealant. Available at your local auto parts store.

[Boydster]

I use this stuff on every thread that takes a sealant... and nothing has leaked yet.
https://www.summitracing.com/parts/arp-100-9904

[Mark Reynolds]

Might be partially due to the male fitting. I would look closely at it and clean up the dings in the threads with a jewelers file. The brass is harder than the aluminum and any dents and gouges in the brass threads will scrape up the aluminum threads you just straightened out.
Here is the pipe thread sealant that Breeze sells.
https://www.breezeautomotive.com/shop/loctite-567-teflon-thread-sealant/
I actually like the smell of it. Weird huh?

[Al_C]

Point taken! Thank you, gentlemen! I'm off to the parts store tomorrow morning to get some sealant. Either the loctite or the permatex. I'll see what they have.