Thanks for the feedback!
I finally got hold of a Parker applications engineer and he confirmed what I had suggested - the groove should be oriented so that the o-ring is drawn to the flat side. This makes it behave like a standard groove seal.
Another related issue is that it reduces the...
Thanks for the suggestion about the Parker guide - I had requested that from them some time ago. It doesn't have the information I am looking for here, it's mostly just some adjusted groove dimension charts for vacuum service.
A company I am working with has vacuum chambers as part of their equipment design. They use half dovetail o-ring groove seals fairly often, instead of full dovetails. One thing they do differently than what I have done, and seen, in the past is that they orient the groove so that the angled...