Did these lids fail? Six hours after water bath canning.
There are visible dimples, though you have to get the angle correct for the light to show them. And is the warping improper? In some light, you can't see it, and then in other light, it looks very visible.
by SeaworthinessNew4295
9 Comments
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thedndexperiment
Yes, those lids definitely failed. It looks like buckling to me, though if they didn’t look like that coming out the canner I’m not so sure.
gobuffs516
Looks to me like you overtightened the rings before the bath
Witty-Application920
😬 def doesn’t look right, as you detected 🕵️
Did you wipe the edges down before gentle placing the centre piece?
Brilliant_Plum5771
The wide mouth rings seem to be more sensitive to over-tightening and buckling when compared to regular mouth.
54965
I don’t understand over-tightened.
I’ve worked construction, I’m not timid when tightening jar rings.
Never had a problem, well aside from a very few cheap discs from the Covid-shortage era that wrinkled.
Typical production is 80 half pint jars of jam annually. 10 minute boil. It can be a few years between instances of finding a lid (cold) that has popped up.
What does over tightening do?
threeheadedfawn
I would research buckling and read multiple sources
XFilesVixen
Yes and always take off the rings after they are cooled
Ok_Acanthisitta_2544
Rings were on too tight, causing the buckling, as submersion in the hot boiling water causes hot expanding air in the headspace (think of the hot air blasting through the whistle in a boiling tea kettle). This expansion caused the outward bulging, since the air could not escape.
You need to finger-tighten only, to allow the expanding gases to escape. Upon removal from the water bath, this leads to the next all-important step of suction as the cooling causes contraction, sucking the lids inward to seal. Fortunately, your jars did not break from the internal excess pressure.
9 Comments
Hi u/SeaworthinessNew4295,
For accessibility, please reply to this comment with transcriptions of the screenshots or alt text describing the images you’ve posted. We thank you for ensuring that the visually impaired can fully participate in our discussions!
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Yes, those lids definitely failed. It looks like buckling to me, though if they didn’t look like that coming out the canner I’m not so sure.
Looks to me like you overtightened the rings before the bath
😬 def doesn’t look right, as you detected 🕵️
Did you wipe the edges down before gentle placing the centre piece?
The wide mouth rings seem to be more sensitive to over-tightening and buckling when compared to regular mouth.
I don’t understand over-tightened.
I’ve worked construction, I’m not timid when tightening jar rings.
Never had a problem, well aside from a very few cheap discs from the Covid-shortage era that wrinkled.
Typical production is 80 half pint jars of jam annually. 10 minute boil. It can be a few years between instances of finding a lid (cold) that has popped up.
What does over tightening do?
I would research buckling and read multiple sources
Yes and always take off the rings after they are cooled
Rings were on too tight, causing the buckling, as submersion in the hot boiling water causes hot expanding air in the headspace (think of the hot air blasting through the whistle in a boiling tea kettle). This expansion caused the outward bulging, since the air could not escape.
You need to finger-tighten only, to allow the expanding gases to escape. Upon removal from the water bath, this leads to the next all-important step of suction as the cooling causes contraction, sucking the lids inward to seal. Fortunately, your jars did not break from the internal excess pressure.