O-rings - what is standard tank size?

[Scott Hudnall]

Does anyone know the standard tank sized o-ring, common to all paintball air tanks?

[magmandylan]

I don't know the diameter, but if you go to a paintball store and ask for tank o-rings they will give you some. If you go to a hardware store, I can't help you. sorry.

[trimegatron]

I've had to go to a lowes or home depot. I don't know the size, but the one that I was able to eyeball did indeed work. Good luck!