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Old 04-06-2013, 03:23 AM
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Default Loctite shelf life

Don't know if this is the right place but does Loctite have a shelf life? I have some which is about 6 years old, has been stored in a shed in temperatures mid 30's oC thru to mid 40's oC. It is still flowable and I have just put some on a nut for a test but does it decay over time?
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Old 04-06-2013, 06:44 AM
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Here's whet they say:

The shelf life period for Loctite® products is one year from
date of shipment from Henkel facilities or as indicated by
package labeling. For optimal storage, maintain product at a
temperature between 8°C (46°F) to 21°C (70°F). Storage
below 8°C (46°F) or greater than 28°C (82°F) can adversely
affect product properties. Cyanoacrylate products must be
stored under refrigerated conditions at 2°C (36°F) to 8°C
(46°F). Storage below 2°C (36°F) or greater than 8°C (46°F)
can adversely affect product properties. Products requiring
storage at conditions other than those specified here are
labeled accordingly.

Here's something from a thread where many are using Loctite that is 10 or more years old:

A rep from Loctite once gave a presentation at the New England Model Engineering Society. Somebody asked him about expiration dates on Loctite threadlockers. He said that the DoD or some such government agency insists that everything they buy have an expiration date, so Loctite puts one on...but as far as Loctite is concerned, there isn't one. If the stuff comes out of the bottle, it's good.

The Cyanoacrylate glues do go bad.
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Old 04-06-2013, 09:59 AM
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I totally agree with the factory rep. I closed a machine rebuilding shop back in 1999. I saved most of the Loctite products since no one was interested in partially used industrial size cans, tubes, and bottles of the stuff. I still have some left, and it still works great.
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Old 04-06-2013, 10:35 AM
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Quote:
Originally Posted by USMCPOP View Post
Here's something from a thread where many are using Loctite that is 10 or more years old:

A rep from Loctite once gave a presentation at the New England Model Engineering Society. Somebody asked him about expiration dates on Loctite threadlockers. He said that the DoD or some such government agency insists that everything they buy have an expiration date, so Loctite puts one on...but as far as Loctite is concerned, there isn't one. If the stuff comes out of the bottle, it's good.

The Cyanoacrylate glues do go bad.
Quote:
Originally Posted by projectnut View Post
I totally agree with the factory rep. I closed a machine rebuilding shop back in 1999. I saved most of the Loctite products since no one was interested in partially used industrial size cans, tubes, and bottles of the stuff. I still have some left, and it still works great.
My last job I worked for Henkel, they own Loctite, I worked with the Loctite
sales and technical group regularly. One year is the shelf life, they test to 2
years with no more than 90% loss in bonding strength. The rate of degradation
accelerates with time. I replace my Loctite every 2 years.

That Factory Rep would be ripped a new asshole if the tech group got a hold
of him saying that.

I worked on a project with Loctite, we actually found that water miscible
synthetic cutting and grinding fluid residues left on machine parts, fasteners, etc.
actually increased bond strength. Whereas oil containing products reduced bond
strength as expected.
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Old 04-06-2013, 02:09 PM
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I keep mine in the shop refrigerator.
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Old 04-06-2013, 02:44 PM
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Thanks for straightening that out, Ron.

I use a thread locker that has a long shelf life and actually gets stronger with age. It's called RUST®.
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Old 04-06-2013, 02:58 PM
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I have a 4-year-old 50ml bottle of 271 I'm just at the bottom of--still works fine. GTTLD applies here because this stuff is $35 or so for the bottle!

I should add that more is sometimes not better with 271. It takes a very long time to harden while still exposed to air.
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Old 04-06-2013, 03:29 PM
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Quote:
Originally Posted by moe1942 View Post
I keep mine in the shop refrigerator.
I just freeze mine.......
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Old 04-06-2013, 08:05 PM
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I just leave mine right in the shope.. Low of -5F to a high of 95F..

I used to use a lot of 271 rebuilding SAAB transmission but not so much now..
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Old 04-06-2013, 10:32 PM
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I tested some yesterday and went out and tried it this morning. It didn't go off, still liquid after 18 hours so I guess the elevated heat of the tropics didn't help. I intend using it on my much threatened cannon build - I've got as far as getting all the bits I need and the stainless barrel sleeve is going to be loctited in.
Interesting that it needs to be kept at such low temperatures. I guess the contents of the fridge will have to make some room. Whoa, I just re-read the post - it's the glues that need refrigeration not the Loctite, but that's still a cool temp storage.
Thanks for the responses.
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Last edited by clive; 04-06-2013 at 10:44 PM.
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