Top positive review
Best stoppers I've tried so far
on March 2, 2014
I've bought a lot of different kinds of stoppers looking for the best ones. These are the best. After reading Amazon reviews, I still felt in the dark about stoppers. They all have good and bad reviews. Which do you believe? Let me be specific: I've tried these on wine bottles, at 72/100" (1.828 cm) internal neck diameter, and glass Coke bottles at 66/100" (1.68 cm) at the rim. They "click" into place with a decisive snap, and once the lever is set, they are VERY hard to pull out. The lever easily releases, also with a decisive snap, and the stopper then comes out without any force. I use them daily for half-liter glass coke bottles (such as those used for Mexican Coca-Colas, popular here in Texas), and they keep the carbonation in without any problem or leakage. These are different from older Zyliss stoppers that I've got, but they work a lot better than any of the old type ever worked. I shook the wine bottle with great force, but not a drop leaked out. It could easily lie on its side without leaking.
I bought 6 if these, plus another single one (plus a bunch of other types). Of these 7 Zyliss stoppers, two made an uneven seal that permitted the stopper to move in and out slightly, but the seal still held and no carbonation or liquid escaped, even when I shook the bottle a little (I didn't try heavy-shaking of a full bottle of carbonated coke to the point where it might blow the stopper, but I may do that outside some day. If so, I'll report back here). So, the seals held firmly even on the two that I considered flawed. The rest were not flawed, and not only do they hold in the liquid and the gas, but they are unmovable when the lever is set. These are good bottle stoppers.
I may write reviews for the other stoppers I bought, and I can't say they're bad; most of them did hold the liquid and the carbonation, but they simply are not as good as these, for most of the other brands would pull out with a bit of force.
What about larger bottles? I can't say, but these were a very firm fit in the two sizes I listed. I can see them holding in a bottle another 8th of an inch in diameter. (.85" or 2.16 cm)
The rubber seal in the plug, fully distended, is ⅞" (2.22 cm) in diameter. That's it's maximum size with no force applied around its edges, so figure that any bottle it will seal will need to be smaller than that.
The released plug, seals relaxed, is about .65" in diameter, so a bottle will need to be slightly larger. My coke bottles are .66" at the rim, maybe slightly larger in the neck where the seal strikes. That's about the smallest bottle it will fit. Any carbonated bottle with an old-style bottle cap will fit it.
I've tried to be specific for you. If you measure your bottles and this looks like it will fit within the dimensions I listed, the mechanical aspects of this stopper are good enough to make it work. How long will it last? I have no idea, but I plan to replace them if they ever break. They're too good to be without!
PS: Answer to how long they last. I use them 24/7/365. There are always two or more in my refrigerator on bottles of various kinds. I have favorite colors, so those are the ones that get used the most, and thus, which break first. They last about 3 years. Then rust begins to build up under the plastic. When that starts happening, they are in their final months. I love these, and am just now ordering my third round after about 7 years of use, not including others by Zyliss from 10 or 15 years ago.