Thanks, but I don't think I received what I needed. My o-rings came today. (Off post 32 on this thread http://www.peachparts.com/shopforum/diesel-discussion/281479-getting-ready-get-ac-working-3.html)

They don't appear to be fat enough. There is a chance they are but I don't want to open my receiver drier for an evak to find I need other o-rings that I have to wait on while the system is "open"

Does anyone know which o-ring?