I'm in the process this week of putting an order together with Specialty Bottle, and communicating with them via email so far they've said that the largest polyseal caps they can provide are size 33/400; they fit the 32oz Boston round glass bottles...
FYI I just rec'd my Freund order, and they now sell polyseal caps for the gallon and half gallon jugs. Don't believe they had them when I'd ordered in the past, as all my old large caps are of the foil or plastic lined variety.
I purchased the caps alone, my bottles are going strong.
