I have 3 corny kegs that have been outside for 2 months or so..
I'm in Michigan and we've had some decent snow and ice, not to mention cold temps.
I have not replaced the o-ring seals on these yet, they have been unused by me..
If I leave them outside, is that detrimental to the kegs or will they be fine as long as I replace the o-rings before I use them?
Keep them away from salt and I think they'll be fine.
If you've never used them I would replace all rubber pieces...pressure relief valves also...just my $0.02.
Freezing MIGHT cause the rubber handles & feet to separate from the kegs, but most of the time it isn't a problem.
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I thought that about the handles and bases, so I checked they yesterday and they seemed good.
I bit the bullet this morning, went out into our 9" of snow, then put them in the basement. Screw it, i'd rather take up a little room then get damaged.