Q: Are most all mini keg bungs the same diameter
A: The openings on the kegs should be the same through most suppliers so this vented bung should fit most new stock 1 gall or 5 liter kegs. this cannot be guaranteed for commercially filled beer kegs that would be resued as some of those tapping systems are proprietary
Q: Are these bungs strong enought to hold off the pressure of a full-primed mini-keg ?
A: Yes, The taps would work fine with a carbonated beverage by design
Q: can this bung be resued? or is it one time and done!
A: These bungs are a 1 time use
Q: Are these reusable?
A: Some people do reuse these, though it is good to have extra on hand. Removing the bung for cleaning purposes may cause leaks after repeated installing/uninstall of bung.
Q: how do you remove the vented bung from the minikeg after the keg is empty?
A: It is not an easy task;( You grab it and pull it out- nothing fancy.