CANNING SLIDE:
I know you’re not supposed to reuse lids, but I do for short term (less than a year) with paraffin wax. You can peel off the old rubber on the lid and replace with paraffin.
CANNING SLIDE:
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Interesting approach. I have used paraffin to put on top of jelly-about 1/4 inch, and then put the old clean lids on.