Replacement o ring for mini keg 64oz

Hello, does anybody knows where to get silicon o rings for mini kegs (Mancan type, but Chinese brand from Amazon), and what size to look for? Thanks in advance!

My local Ace Hardware has a vast array of o-rings. Bring one to the store and see what you can find. It could save you $5 of shipping for a 50 cent item.

Thanks I’ll try that!

You make me know more about this. I like it very much.