Fuel Pump Fittings....Which Thread Sealant?

[C9x]

I like the liquid teflon tape. It comes in a little tube like toothpaste, but smaller, and won't break off and get in the fuel system if you keep it back a thread or two.


Don

Loctite's LPT I think it's called, works fine on steel and brass.

Don't use it on aluminum.
It glues the aluminum together so strongly that you'll peel threads off the male fitting when taking them apart later on.
And later on can be ten minutes to several months.

Use Teflon tape as recommended.
It works well and the recommendations not to use it probably come from sloppy workers.
If you're careful you won't have a problem.

That said, the local speed shop recommended Never-Seize for use on pipe threads that are aluminum on both sides.
It works well.

Just don't crank it up so tight that you split a fitting.
With Never-Seize and Teflon tape, friction is lessened and it's easy to overtorque fittings.