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The two most common jar failures I have seen happen are both bottom separation incidents..
Either the bottom separates in the canning process. Or separates when the seemingly sealed lid is taken off..
The most common brand of jar we have seen fail by breakage or lack of seal, is the Golden Harvest or other Walmart brand jar.. Rarely have we had a Mason, Kerr, Bernardin brand jar fail.. They can have damage like any other jar, but luckily few failures in our experience..
Either the bottom separates in the canning process. Or separates when the seemingly sealed lid is taken off..
The most common brand of jar we have seen fail by breakage or lack of seal, is the Golden Harvest or other Walmart brand jar.. Rarely have we had a Mason, Kerr, Bernardin brand jar fail.. They can have damage like any other jar, but luckily few failures in our experience..