Rubber O-Ring liquid side discolored EDIT: It's the gas side!

[BrewingInVT]

I was about to keg and took apart my pin locks for a good cleaninng. The o-ring on the liquid side is very discolored and having trouble just popping it off. Could this cause a co2 leak, even on the liquid side?

I'd like to keg tonight and get it on gas and down to 38 degrees, then deal with the o-ring tomorrow or monday. Bud will wait if that oring could cause co2 issues.

Thanks in advance!

 

[BrewingInVT]

Oh dang...its the gas side, not liquid. Not the little 0ring on the poppet. the one wehre the gas would connect....but..i guess that means not kegging tonight.

 

[passedpawn]

I replaced one last night while kegging beer. It was swollen and I couldn't get the ball lock disconnect onto the post.

Why would an oring swell? No idea, but when I got it off and compared to a new one, it was a mm or two larger in diameter.

Back when I started kegging, I splurged and got about 10 spares of ever oring you can find on a keg, and also poppets and stuff. Saved my butt on many late nights.