While I've yet to have one loose it's seal yet, I agree with you, re: the mason jars. That said, I like the apothecary look they give my pipe hutch, so I keep smaller amounts of my regular tobaccos in these, using the masons for longer term storage inside the hutch.Mason jars are cheap and reliable. I first tried those like in your photo but one did not seal well and the plastic seal on two split after several months. I also found them harder to fill the pipe.