Locktite PST567

carl nank · #1 03-25-2010, 11:25 AM

I saved a post from someone who says "For NPT threads, use something like Locktite PST 567. It is rated for fuel, oil, hydrolic fluid, etc. It also acts as an antiseize".

I have some weeping from one fuel tank around the 13 hole round cover on the in-bound fuel tank rib. It seems to be coming from 3 of the screws.

The post says as above, but when going onto the internet, the data sheet does not say that it will stop weep leak or any such thing.

Has anyone any experiance with this product and will it seal my weeping leak?

G-force · #2 03-25-2010, 01:30 PM

Sounds like one of my posts, we use alot of 567 here at work. Its is designed for sealing the crest of tapered NPT threads. Not sure how it would do on straight threads. I would guess it would work fine, as it is anerobic and sets slightly. You will have to pull the screw, clean it and the cover up, then reinstall. Personally I would probably at that point just use a typical fuel safe sealant at that point, something like Aviation gasket sealer.