Vacuum Sealer Adapter (Wide-Mouth)

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This is a sealing device that makes it easy to airtight wide-mouth canning jars. It fits snugly over the lid of the jar and rests on its rim just below the threads. When combined with a flexible rubber seal (not included) and attached to a vacuum pump (also not included), air can be extracted from inside the canning jar, enabling long-term preservation of dry goods in optimal condition.