480cc, 580cc talon tunes CF bottles (and most others) o-ring size

[vdwb]

Just a quick question, 

Does anyone off the top of their head know the o-ring size for the carbon fiber bottle? Most 480; 500 and 580 cc bottles use the same one, just need the size please. Thank You in advance.

 

[T3PRanch]

http://www.oringsandmore.com/metric-buna-o-rings-18-x-2-5mm-price-for-10-pcs/

If your running near 4K or higher pressure you might want 90 Durometer Hardness.

You can also use Polyurethane if you want a tougher o-ring.