Finally got the SanKey out of one of the kegs I acquired a while back, but I need a means of keeping the liquid and/or sand inside of it. Where could one find such a thing to keep it all in there? Is a rubber stopper going to be sufficient?? I want to start lifting with these things ASAP!
Go to an automotive parts house and get a rubber freeze plug for an engine block. Just measure the dia of the hole in the keg and request a same-sized plug. The rubber plug fits in the hole, and as you turn a nut, it expands to seal the hole. They're about $4.00 or so. It'll be plenty sufficient.