Are they air-tight? Can I keep them on bottles for a long time without worrying about bugs getting in?
897494
Don't know, we are commercial winery and use these pourers in our our tasting room. The longest wine is left in the bottle is overnight - the wine if fine the next day. I can say we have used many different measured pourers, and without doubt these work the best for the cost.
897495
The stoppers don't seem to be airtight because there have been instances where fruitflies got into the bottle.
897496
I don't think any Measured Pourer would be 100% air tight for extended period of time. These are good Pourers, haven't notice any bugs entering bottle.
503307
They are zip lock, not sure what a "zipper" is...seem to be air tight, would not put under water, but keep thing fresh.
1112362
I do not believe they are "air tight." If they were I think there would be a bit more resistance felt when closing and locking the box because of pressure on the O-ring. The manufacturer says that they are "water resistant." Were they "water-proof" then they would be airtight.
1234557
Yes, they are absolutely air tight. There is a rubber (or perhaps silicone?) gasket around each lid, and when closed makes a tight seal. I keep items such as flour, cornmeal and sugar in them safely.
39387
The jars are glass and the tops are plastic. I would not say they are as airtight as glass and metal would be. Suggest your get small mason jars as their lids have metal inserts with a rubber seal. Cheaper too.
889237
Yes, they are airtight. I use them though for flavored water, not juicing. They do seal very well.
1981529
I have kept mine for long periods of time - and they are great. . . key seems to be keeping the moisture at bay. I vacuum sealed mine for keeping but probably not necessary if you seal them well and store in a dry place. You will love these little gems. :)
2013551
Not like an airtight or waterproof seal. But I am very happy with them for just storage.
1506561
Well, the lids are secure, but at the same time, they lift off easily. I suppose that a screw-on lid would be MORE airtight, but I have not had a problem maintaining freshness in these jars.
1310774
They're not airtight. They're tight enough to stay on when not tossed around or shifted. But, they're definitely not like a Tupperware lid that seals shut.
725491
I place the entire bag in container. The seal is not airtight. But bugs haven't attack the container either.
251384
I keep them in an air tight container and they last for at least a couple of months. They lose a little bit of moisture but all in all, they are still good! I bought mine in early December and they are still good today!
842664
They haven't leaked and I have stored them horizontally. Of course, just make sure the lid is properly screwed on :). These are great bottles and I love that I can grab one "to go" for a snack for baby by just screwing a nipple on instead of the cap!
1560666
There is a rubber seal on the inside of the plastic lid. Some of them still leak. I certainly would not call them airtight.
13819
no, they are not air tight. you have to get a special can light housing that is watertight for over a shower. check with home depot or lowes, they have them.
1452908
Yes, the caps screw on and off so they are watertight and drop proof. They stick a little sometimes getting them on, but are by far my favorite water bottles. I am hoping to buy another set soon.
1826841
THEY ARE NOT AIRTIGHT!!!!Good for crafts or buttons I guess?The plastic seal between the metal cap and the jar is not designed to be airtight seal.