Anyone wonder why it isn't hard to get the lid off of a Loctite bottle.

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Anyone wonder why it isn't hard to get the lid off of a Loctite bottle.
Nope. Loctite thread locker is an anaerobic adhesive that cures—turns from liquid to solid plastic—only when confined between metal threads in the absence of air. The liquid requires metal ions (active surfaces like iron) to trigger the curing process.
 
But that is not what you said/implied.
You said, "Anyone wonder why it isn't hard to get the lid off of a Loctite bottle." To me, that implies you would expect it to be hard, but it isn't.
 

I have some from the late 80s-early 90s.
Some opened & used, no drip or drool on threads or inside cap and they get tight even tho threads are clean.
I've theorized the chemicals get absorbed into the plastic and slightly swell the threads & make them tite.
Old bottles also get sticky, discolored and the printing wipes off, on the outside, which seems to confirm this theory.
Still use them, but have wondered if by absorbing plastic into the fluid the locking effectiveness is changed.
Any Chemists out there with a thought?
 
Do those old bottles still work for you? I have always thought Loctite had a pretty short shelf life.
 
Do those old bottles still work for you? I have always thought Loctite had a pretty short shelf life.
I've used them and never noticed a problem. Some do seem thicker & hi-temp ones definately are discolored.
Guess I should do some tests. I'll put a nut on a bolt & see how they seem. It'll be a while, as I'm in the middle of moving & they're buried/lost right now.
Most of them are from the Speedway, earliest are '87 IIRC. They'd give you a kit in a metal box with a Loctite sticker on it. This was before Permatex bought them out.
Even the unopened older bottles start to get sticky & ink smears, so air in bottle seems to make no difference, but might.
 
Use a paper towel to clean the top of the bottle after every use, that way it doesn't harden in the cap, gluing itself to the bottle.
 
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