Low side O ring

Is possible the air conditioning system uses metric sized o-rings? It looks like you need a 21 or 22mm diameter. Please correct me if I’m wrong, I’m not familiar with the air con system.

Ill have to get you a pic of it tomorrow. But its the low side hose that runs along the firewall and connects into it.

Honestly I know nothing of those sizes. I look up O ring sizes and im just lost. I looked on a site and to custom make 1 it costs 25 dollars for just 1 o ring.

There’s a listing on ebay for cutom made o-rings

oh wow let me give this a look thanks a bunch.