I apologize in advance, because this question has probably been asked and answered before, but I'm on very limited time right now. A big piece of the tube on a plastic bong I have has been broken off. Luckily, it's off the top of the tube, so it's not necesarilly irreparable. If I use a good sealant, I know it will easily be fixed. My question is, what kind of sealant would be good to attach and seal the broken piece? I was thinking hot glue, because I have plenty of it, and I've used it to make and seal homemade bongs before. Any advice is greatly appreciated. Thanks!!