What Causes Jars to Not Seal
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This is part one of a series on canning seal failures. It can be frustrating when you can’t figure out what causes your canning jars not to seal.
Here you are excited to check the seals of your jars, get them washed up, and stored away. Then…you realize that some jars did not seal!
Links to the rest of the series
Timing: Have patience! Don’t check too soon.
This first video is for those of you who are just super excited to see those jars seal up and start stressing too soon. Have patience!
Are you a second guesser like me? You can’t help but wonder if you’ve done it right and are anxiously checking and double-checking those cooling jars to see if it worked.
They are still hot in the canner.
Don’t press on those lids for a full 12 hours. Give them time.
If you press down on the seal too soon, you’ll risk a weak seal. You want those lids to pull down of their own accord. No help from you.
How Long Does It Take for Canning Lids to Seal?
If it’s been a couple hours and you think for sure they should be sealing soon, let me tell you…don’t get worried just yet. Some jars will start popping right out of the canner; some take a few hours.
Wait a full 12 hours or so before you check the seals on your jars. The contents must cool fully. If there is any warmth in the jars, it is too soon to be prying on the lid or lifting the lid to check the seal. Patience! Patience! Trust me…12 hours. Overnight is the best.
Here’s a link to learn more about preparing canned food for storage.
Why Did My Canning Jars Not Pop?
Everyone loves the pop (or ping) of canning jars. That sound makes us smile! But what about when you don’t hear the jars pop?
Again, don’t worry. Sometimes lids make a nice ping…sometimes, they don’t. Or you might have missed it.
The seal is what you are most concerned about. So if you don’t hear the pop, just leave the jars alone to cool for 12 hours, and then check the seals. It could still be they will be perfectly sealed without making a sound.
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Hello, Thanks for all the great information. I wanted to give my own personal account that is my truth with canning. The “off” brand lids aren’t worth the few dollars you might save. Cheap canning lids failed for me. After all my hard work it made me want to cry. Luckily, it wasn’t my first experience and I did have a box of Ball lids on hand, so I was able to swap them out while everything was still hot. Almost immediately the Ball lids start sealing! It was a huge sigh of relief. Never again will I attempt to… Read more »
I enjoy these tutorials. Keep up the good work.
Thanks Sharon!