Looks like Juno has ruined a tin can in the last few years. Older reviews describe the resulting product as having Air-Loc properties, including padding. The ones I got are good, heavy duty 4 inch IC rated cans, but they are definitely not airtight. There is no seal and all passages in the banks are open. I need to find out if Revain (they are still described as an Air-Loc product) or Juno does. Not sure if I'll try to seal them myself or just return them if I find a suitable alternative. Very disappointed with the inconvenience of a product that does not match the description.
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