Stabond is supposedly good for PVC (I've never used it.)
Other choices would include the Zodiac 7097 (Universal), or Weaver 3001 (also Universal.) I believe all 3 are urethane adhesives.
I've used the Weaver glue for attaching hypalon to aluminum, and it works quite well. Doesn't turn an ugly brown like the hypalon glues do, either. Supposedly available from Shipstore.com (and perhaps other places.)
Should be able to get the Zodiac adhesive from a dealer, though they will probably have to order it.