Use a hot glue gun, it works wonders...or if you want something less messy, use a silicone-based sealer (kinda like caulk, I dunno if you like the caulk or not) Make sure its silicone based, and try not to get any inside the bong if you can...it'll be smelly and unpleasant. Make sure you let it cure, might take a day or two to fully seal the gaps.

What kinda bong is it? are there joints between materials/pieces of the bong that have the non-airtightness?
DrGonzo Reviewed by DrGonzo on . leaking bong The main chamber and the base of my bong isn't as air-tight as it should be. Anyone know of a good permanent, non-toxic, inexpensive material that I could use to fix this problem? I'm tired of getting stinky ass bong water stains on my pants haha Rating: 5