ngyc87,
What's high pressure for you? If design is less than ANSI 1500 class, you might take a serious look at SWG's. There are several variations of the metal o-ring design, the one I most familiar with is nominally called 'helicoflex'. I haven't seen any with pass-partitions, but it shouldn't be too hard. Normally, when I see pass-partitions, they are HE related, and in most cases the right SWG, with internal and external metal rings tend to be the best selection.
rick