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RANGER1
15-10-2009, 11:21 AM
Has anybody out there have suggestions for thread sealants .

R134a with polyesrer oil , having difficulty with leaks
on NPT threads . Materials used are stainless to mild steel and brass to stainless and mild steel .

Thanks

Gibbo
15-10-2009, 01:37 PM
Loctite 577 should seal it

monkey spanners
15-10-2009, 04:44 PM
I've been using Tru Blu by Rectorseal without problems,also its available at my local wholesalers. I've not been impressed with Leak lok though, i only use it on level sensors on milk tank wash systems as its what was used in the factory.

I might get a tube of loctite 577 and compare it to Tru Blu as trying new stuff stops me getting bored.

Jon :D

Quality
15-10-2009, 08:03 PM
Loctite 577 should seal it

every time

goshen
15-10-2009, 09:49 PM
I've been using Tru Blu by Rectorseal without problems,also its available at my local wholesalers. I've not been impressed with Leak lok though, i only use it on level sensors on milk tank wash systems as its what was used in the factory.

I might get a tube of loctite 577 and compare it to Tru Blu as trying new stuff stops me getting bored.

Jon :D
good stuff we use them both !!!:)

lowcool
15-10-2009, 11:10 PM
loctite 567 for me

nike123
15-10-2009, 11:18 PM
http://www.refrigeration-engineer.com/forums/showthread.php?t=19185&highlight=leak+lock (http://www.highsidechem.com/lklcksp.html)

lowcool
15-10-2009, 11:45 PM
leak lock?hate the stuff