AN and npt fittings, proper sealing???

[khilgers]

I am going to be putting together my oil cooler, remote filter setup and I had some ?'s about sealing fittings properly. I know that 37 degree AN fittings seal themselves, but what about the fittings going into my filter mount, and oil thermostat. -10 unions for the thermostat and 1/2NPT to -10 for the filter mount. Can I just use loctite for all those fittings?

[garagelu]

Yea, for NPT fitting you should just put some thread sealer on it. I would rather use liquid thread sealer instead of loctite.

[LongGrain]

wasnt there JUST a thread about this a week or two ago? search, and you will find all the answers, i remember there being some really good info in that thread.

[Def]

Use teflon tape on the NPT stuff - oil and high temps don't get along with liquid thread sealers over the long haul in my experience.

Don't use loctite.

[codyace]

I like silicone on any npt and oil connections. Oil actually eats away at teflon tape (and or makes it super brittle and into that hard brownish milky white crud)

[Sir]

Use teflon tape on the NPT stuff - oil and high temps don't get along with liquid thread sealers over the long haul in my experience.

Don't use loctite.

neither does teflon tape and oil passages.
I use paste.

[Def]

neither does teflon tape and oil passages.
I use paste.

You're doing it wrong if you're getting pieces of teflon tape past the fitting. Teflon tape should start below the end of the threads(1-2 threads is a good amount).

I've never had teflon tape get eaten away either.


Silicone can work in some cases, but sometimes it gets pushed out of the threads enough to cause a small leak. It usually works though.