Uh, the glue I mentioned in the plate cell thread probably won't be the best choice in this application.
CHeck the LORD Fusor tech team for the optimal glue.
http://www.ellsworth.com/gluedoctor.htmlIf you aren't using any caustic e-lyte, you can use model airplane epoxy, and add polyester bulking agent to get the viscosity up. CHeck with Atlanta Hobby or any hobby shop. Use 30 min to allow plenty of set time.
If it's simply a matter of sealing threads, Goop marine is tops, and it can be taken apart later whilst epoxy has to be heated beyond what yer PVC can stand to make it let go
Turtle