I just bought two reconditioned 5 gal pin lock kegs. When I filled them up with hot water to clean them out I noticed that the rubber boot at the top of one of them was completely loose - it's only being held on by the poppet valve stems. I plan to remove the poppet valves and try to glue the boot back on... Does anyone know what type of glue would work best?
Liquid nails or rubber cement would work nicely. Make sure that you remove the 'boot' and remove all of the old residue that may be stuck on. I would probably run some coarse grit sandpaper over that afterwards just to create a rough surface for the cement to bind to. That isn't necessary but make sure you clean the area at least.
I've heard liquid nails does a nice job.