Why can’t you put vacuum insulated metal drink ware into the dish washer? Like Bubba Mugs or YETI etc…They seem solid, so what am I missing that could be damanged by, I assume, the heat?
In: Technology
Thermal expansion. The air is vacuumed out but the cup is not one piece and therefore there will be a seam where the seal is made. This is going to be the weakest point and most prone to breaking. Once your seal is gone there’s no vacuum as air has filled it, and there goes most of your insulation. I don’t have any YETI gear, but I’ve washed different types of hydroflasks and related gear without one breaking, sometimes cheaper brands have the seal fail. Also if you drop it and it dents a crimp can form which will be another structural weak point. FWIW most water bottles I’ve seen fail have been from repeated drops on the same spot, as opposed to dishwasher damage, but the washer is still not particularly good practice. Especially if you do a “sanatize” or other cycle that uses extra high temp.
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