Do AIO CLCs deteriorate when not in use?

[mof]

I've got an evga hybrid which I've kept as a spare and I'm wondering if the cooler will deteriorate much just sitting in a box for long periods of time?
I'm just undecided about whether to sell it now and get a cheap card in the future if I need a spare or just keep it in case I need it.

 

[mof]

If it hasn't been used then the moving parts haven't "been moving" so it'll just be in a "frozen" state until it's used. I wouldn't worry.

OK that's reassuring thanks.

 

[mof]

check the sell by date

I've heard they smell badly.

So that's why it was reduced