The Krazy Glue Single-Use Tube is only about a 1/4 inch with another 1/4 in the cap (that I have taken off).. that small helps in size.
I only had the one ammonia pad, there were a few other of the 'classical vials'.. as this type of kit is ment to be carried I thought it a good idea to put it in, along with the sugar for any diabetics that might need it while I'm passing by..
I found a few threads about waterproofing with press and seal on the forums but nothing more then a dunk... after I get moved into my new house sometime early next year I may set up a longer term test with cotton balls pressed and sealed and soaked in dyed water for a week or so to see just how water resistant it makes it.. but it should be good enough to protect the meds...