Gallagher - Poultry Waterer replacement O ring seal?

[zekii]

Hi all, anyone here using one of these waterers from Gallagher/Miraco?
I'm looking for replacement Seal O-Ring, been searching on the net with no luck.

I saw a pallet of these at my local feed store the other day, this is a newer model but
the older model takes the same seal O ring, I need a replacement for my 8 year old model. thanks

 

[Airyaman]

Is your o-ring still intact so it can be sized? Most o-rings are fairly standard sizes and you can usually find a replacement at an auto parts or hardware store or similar.