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Thread: Leak Lock
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10-09-2012, 07:58 PM #1
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Leak Lock
Has anyone found a thread sealer for refrigerant fittings that is better than Leak Lock. Over the years I have found a lot of refrigerant filter shell covers that have leaks around the threads of the brass MPT connectors. I have always used Leak Lock on the threads in the past and sometimes it works and sometimes it doesn't.
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10-09-2012, 08:06 PM #2
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There's a thread about a product called 'Nylog'. I've never tried it, but other guys say it is better than the blue stuff.
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10-09-2012, 08:13 PM #3
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Nylog is pretty good stuff.
Originally Posted by ncboston
On a fitting that is going to be PERMANENT, I suppose that LeakLock is OK, but if there's a chance I'm going to want to take it apart, I'm using nylog.
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10-09-2012, 08:16 PM #4
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The nylog is great stuff but you have to use different ones for r-22 and 410a, so it has worried me with cross contamination, but it is impressive and does work better than leak lock
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10-09-2012, 08:18 PM #5
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The HFC version is backwards compatible. Originally Posted by hkempf
No need to carry 2 bottles.
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10-09-2012, 08:18 PM #6
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10-09-2012, 09:00 PM #7
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Ditto on the loctite 554, doesn't come apart easily but it works great.
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10-09-2012, 09:32 PM #8
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Nylog works well... But I like using loctite 567 on those drier core fittings...
Also works great on those old discharge gas thermostats on 06E compressors. Leak lock will never seal those.
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10-09-2012, 10:01 PM #9
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X2 Originally Posted by Dchappa21
I carry tubes of both on my truck.
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10-09-2012, 10:44 PM #10
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I HATE LOC-TITE!!!....used it for ohhhh soooo many years, and if it gets hot or cold it will eventually leak. Works wonders on those hot discharge plugs and head sensor threads. Awesome on discharge/suction service valve cap threads, and on any gasket or O-Ring I install.
NYLOG is true nectar from the Gods. Will NEVER go back to LOC-TITE.
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10-09-2012, 10:57 PM #11
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Thank you jpsmith I was wondering about that but all the info I find I vague
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10-09-2012, 11:14 PM #12
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In this situation, it's hard to beat a combination of. Originally Posted by hands
Teflon tape & loctite
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10-10-2012, 05:33 AM #13
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Can't stand Leak Lock! Got called to look at a walk in cooler that previous tech had covered the txv connections and orifce in the stuff, no room to do anything, took ages to clean it all of as it sets like stone.
Been using Tru-Blu by Rectorseal for years on taper threads without any problems, comes apart again if needed.
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