Audi a3 8l AC concerns

[Bobert]

Hello, I have a leaky AC system, planing to replace all o'rings, when I search for them on the parts sites, only one size comes up, which is id 7.65 and od 11mm, can anyone confirm that it is the right size, an does the system uses the same size orings all around?
Cheers.
Car Audi a3 8l '97 1.8t 150hp