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Canning -- Equipment
Can commercial canning lids be reused to can foods at home?
No. To begin with, there is no way to determine if the lid fits the sealing surface of the home canning jar the way that it should for best function. Secondly, commercial canning lids are manufactured and intended for one time use so the gasket will most likely not function the same if re-used. This is the same reason that the flats of a home canning two-piece lid cannot be reused.