Are these air tight for long term storage?
2027974
Yes the lid is air tight meaning it stays twisted on the can nice and tight - to keep oxygen from entering the can you could place the top of the can (not the lid) on a sheet of thin flexible plastic, silicon, rubber etc. and draw a circle, cut it out and place it into the lid and that will cover the sprinkle holes keeping what's in the can dry - that's permanent protection and you take it out to shake and put it back in to seal the cover - the other easy thing to do is to peel off a piece of wax paper, plastic wrap or storage bag, put it on the can and twist the lid back on over it and your covered and protected. Yes the lid is air tight meaning it stays twisted on the can nice and tight - to keep oxygen from entering the can you could place the top of the can (not the lid) on a sheet of thin flexible plastic, silicon, rubber etc. and draw a circle, cut it out and place it into the lid and that will cover the sprinkle holes keeping what's in the can dry - that's permanent protection and you take it out to shake and put it back in to seal the cover - the other easy thing to do is to peel off a piece of wax paper, plastic wrap or storage bag, put it on the can and twist the lid back on over it and... » Read More Yes the lid is air tight meaning it stays twisted on the can nice and tight - to keep oxygen from entering the can you could place the top of the can (not the lid) on a sheet of thin flexible plastic, silicon, rubber etc. and draw a circle, cut it out and place it into the lid and that will cover the sprinkle holes keeping what's in the can dry - that's permanent protection and you take it out to shake and put it back in to seal the cover - the other easy thing to do is to peel off a piece of wax paper, plastic wrap or storage bag, put it on the can and twist the lid back on over it and your covered and protected. « Show Less
2027975
No, they are handy for sprinkling baked goods with sugar or dusting with flour.
2027976
Yes, if you put plastic wrap to cover the holes on top. Other than that it works well as a dusting agent for sugars, flours, etc.
2027977
I've been using them for a good while which I think is long term and so far I haven't had any problems with them. But no they aren't air tight. To make them so I would cover them with plastic wrap before putting on the cover or just find an alternative container.
2027978
Well, they have holes in the tops; so I'm not exactly sure what you mean by airtight. The tops do stay on quite well, but the holes would allow air to get in.
2027979
What do you mean air-tight, they have holes in the top! If you mean do they come with covers, no. You can put a disposable plastic glass (motel type) over the top for a cover, that is what I did.
57594
They have a pretty good rubber (maybe soft plastic) seal. I don'think it's air tight. They have been dependable in storing flour and cookies.
889236
they are airtight. I have never had any problem with them. I even put them in dishwasher. they are great
691702
i own this, with a properly placed seal it should be airtight. the seals remove for cleaning. if you do not install them correctly then it will not be air tight. they are pretty easy to install. i am happy for the price i paid. tupperware made nice canisters but they will cost you twice as much and they are not clear.
1722854
Yes, these containers do leak, they are not air tight. Great for non-liquid items however.
341762
I got two, and I feel they do become airtight if all air is taken out first, by that I mean fill complete to over fill. I use them all the time, I will if I need to buy again.
129415
They are very well made and seal tightly. I'm not sure they are air tight, but they are leak proof.
1973743
I don't think the're airtight but the ones I have are defective. The "zip strip" is not attatched to both sides of the bag, so they don't seal at all. I havepurchased these big zip bags for a few years now and have some old ones here but these are manufactured wrongly.
889237
Yes, they are airtight. I use them though for flavored water, not juicing. They do seal very well.
226188
Not really. They keep air out. They will not keep pressure in the container-it will go flat
1973742
I don't think the're airtight but the ones I have are defective. The "zip strip" is not attatched to both sides of the bag, so they don't seal at all. I have purchased these big zip bags for a few years now and have some old ones here but these are manufactured wrongly.
39385
They are reasonably air tight. I can tip them over and my yogurt doesn't leak, but you need to make sure they are on snug. I think they'd be good for your purpose. I don't keep my spices more than 6 months anyway. only buy small amounts for that reason. Hope this helps. they are good jars.
2243234
I use these for sewing items fabric and tools etc. Although the lids fit very well I wouldn't say they are airtight. I think they would keep out most bugs. I store some things in my garage. But I wouldn't swear to the kind of vermin and bugs that seem to find their way into just about everything. So far none of my fabrics or tools have had anything in the boxes I didn't put there! If you have something you need to be absolutely airtight against anything. I would recommend a screw on top container. These do though close well and no problems so far. Good luck.
320017
There is no seal or rubber gasket per se to create a true airtight container. However, they do appear to be relatively air tight.
2050341
No, not necessarily. They can be stored in airtight container until next use. They are very dry. I've had mine for months stored this way..
2179042
Yes. I use them in my art and store small amounts of acrylic varnish, or other liquids that harden if they are not air tight and the material stays fresh.
493750
They are sealed in foil wrap so they should be fairly air tight . . . I'm been using the same box for several months with no problems at all ... not sure what you mean by "years" . . .