The canister can be used in the fridge, Microwave (a silicon button off on the lid), dishwasher, and freezer safe.
It will hardly crack or damages by those uses but the canister can be cracked by over-pumping over the period of time.
Remember try to less pump than what you normally do… when you feel the pump handle gets a bit tight, you may stop pumping.
*Especially if you prepared to put your vacuum sealed container into the fridge or freezer, and you have to less pump than normal, because the low temperature pressure will be very high.
0.5L – 2 pumps,
0.8L – 3 pumps,
1.2L – less than 5 pumps,
2.0L – less than 7 pumps,
3.0L – 10 pumps and depends on the volume of contents store in the canister,
4.5L – 10 pumps and depends on the volume of contents store in the canister.
*Do Not vacuum seal the hot or warm food, hot or warm food must be cool down to room temperature before close the lid or put into the Fridge or freezer.