Don't you have to use a water-based solution in an ultrasonic cleaner? If we're talking about a sealed can, I'd have concerns about rust and corrosion if I can't get it 100% dry. Although, maybe if its alcohol based, it wouldn't be a problem - I know folks who use hand sanitizer to wet their cans - something like 98% alcohol and it works good too.
Just curious - are there any advantages to having a sealed can? I don't have one, but if I did, it'd kill me not to be able to take it apart and clean it.
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