Are the Aussie Mason lids airtight and suitable for long term food storage?

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Aussie Mason jars all come with 2 piece preserving lids, a Single-Use Flat lid that has its own inbuilt seal, and a reusable screw-on band to hold the lid in place during the preserving process.

The two-piece lids are suitable for hot water baths and pressure canning.

The straight-sided jars are freezer safe – with the correct headspace allowance.

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