I'm hoping someone here can help me. I purchased the 10 pack of #301 stoppers from Ruth Niles (Very nice woman by the way) but I'm not a wine drinker so I don't have any bottles to test the fit of the stoppers. Every other bottle I had, the stopper didn't fit. Either the mouth was too small or too large for the rubber O-Rings to seat properly. For those of you that have purchased these stoppers and also have tested the fit in wine bottles, do they create a good seal? Thanks