So they handle high temp well. Can I also use them in the freezer?
1446816
I have use them for food that I have placed in the freezer without any problems!
683858
Yes, they are safe for use in the freezer, microwave, and dishwasher. You can check out their website for more information at sistemaplastics.
1180215
I have not tried to put them in the freezer. I am writing this to you as I sit next to the pile of used ones that need to be heated again to make them liquid, they become solid after use. That pile has been there for several weeks. Really not worth the money. I would not buy these again, they are a total pain. If after you heat them if there is even one crystal left, this can be very hard to see, they will just reheat when you take them out of the hot water and you are stuck heating them again to reset. They do not stay warm for nearly long enough to make them worth it. I would strongly urge you to skip these and go with an old fashioned water bottle. Sometimes an oldie is a goodie. I have not tried to put them in the freezer. I am writing this to you as I sit next to the pile of used ones that need to be heated again to make them liquid, they become solid after use. That pile has been there for several weeks. Really not worth the money. I would not buy these again, they are a total pain. If after you heat them if there is even one crystal left, this can be very hard to see, they will just reheat when you take them out of the hot water and you are stuck heating them again to reset. They do not stay warm for nearly long enough to make them worth it. I would strongly... » Read More I have not tried to put them in the freezer. I am writing this to you as I sit next to the pile of used ones that need to be heated again to make them liquid, they become solid after use. That pile has been there for several weeks. Really not worth the money. I would not buy these again, they are a total pain. If after you heat them if there is even one crystal left, this can be very hard to see, they will just reheat when you take them out of the hot water and you are stuck heating them again to reset. They do not stay warm for nearly long enough to make them worth it. I would strongly urge you to skip these and go with an old fashioned water bottle. Sometimes an oldie is a goodie. « Show Less
745888
I have used them in the freezer to store red chili sauce I make with no problem but they are not pyrex and I broke one in the microwave once. So freezer is ok but not for use in the oven or microwave, in my experience.
1568188
A bit late... behind in email... I wouldn't suggest using them in freezers. My experience was not a good one in that seal was poor, and that did not involve any sort of refrigeration. For putting stuff in a freezer, a FoodSaver is best. Of course, that has its limits in sizes.
340936
I haven't tried ..... But would also like to know if they are safe for freezer
1730641
They are plastic with a rubber gasket and yes, you can put them in the freezer.
550019
I have not tried to freeze them. And I don't think it would work very well. If the expanding liquid didn't break them, the extreme cold would probably make them more prone to crack
774605
I haven't tried to put them in the freezer, but I have used them in the microwave and then put icy cold liquids in with no problems. They aren't made of pyrex, but they seem pretty durable.
44325
Yes, you can place them in the freezer and freeze them with out a problem. You can even use the mats in a microwave. They're very durable (and versatile).
1605583
I have had no issue using them in the freezer for short periods of time. The seal is pretty tight. Long term like with any type container frost builds up.
1075535
I kept mine in the freezer until I was ready to use them. That worked well.
1110810
They are not cold at all. In fact I don't think you are even supposed to put them in the freezer. They are for decorative purposes only:)
1382921
I think your ok to use in the freezer, but don't try to heat in them--not at all like Pyrex, which can be heated. I tried to warm on stove with one of the Libbey ones and it cracked. I think these are mainly for food storage only.
1877876
Yes, they can be used for freezer. However, they are not very thick so double bagging would be good and they are NOT "zipper" type bags. I am so glad to be able to find these because I have always had so many uses for just a plain quart size bag WITHOUT all the zipping parts. I was NOT able to buy plain baggies anywhere until I found them here-so I stocked up. Definitely would buy again and again as long as they are available!
568367
I don't see why not. As long as you make sure to get all the air out, I would think you could freeze meat in them.
774604
Yes, these do fine in the freezer. I gave them as a gift for Christmas, to my son-in-law, and they are always in his freezer waiting for the next chilled beer opportunity!