now for ghetto bongs i just get a damn normal bowl head there like 1.75 from a headshop and get some heat proof tubing or something and just make it a stick in type bowl or screw it into some pen cap.....but to seal something like a socket use some 2 part epoxy with a high heat rating also dont have plastic too close to bottom of bowl only have the tube like 1/4 of the way in the epoxy will hold it fine and be sure to sand both parts where epoxy is gonna go and clean it with rubbing alcohol before u start make for a better bond *almost typed bong*