Clip top jars not sealing

greyteam1959

These are glass clip top jars the ones that have the rubber seals.
We seem to have a problem with the jars not sealing properly.
The seals are all new.
Quite a number of the jars that we have hot filled have no seal when we come to open them.
Anybody have any idea as to what the problem might be ??

Black_Cat2

Not sure if can use 'product placement' here but are you talking along the lines of kilner jars with the rubber seal which can be removed? 

NaughtiusMaximus

If it is kilner jars that's normal.

I use them for making liquers, part of the process for which is turning the jar over for the first few days until all the sugar has disolved. There is invariably a small amount of leakage, which I mitigate by holding the jar in such a was as I press down on the lid as I turn the jar. If you want a tight seal you really need screw top jars.

maisie_cat

Are you water bathing the contents?, they should seal when they cool, but just putting hot contents in them may not seal in an obvious way. I no longer use the clip tops for chutney as they seem to be designed for storing dry good nowadays. For water bathing and pressure canning I use Kilner preserving jars with the 2 part lid.

Carrot007

NaughtiusMaximus said:

If it is kilner jars that's normal.

I use them for making liquers, part of the process for which is turning the jar over for the first few days until all the sugar has disolved. There is invariably a small amount of leakage, which I mitigate by holding the jar in such a was as I press down on the lid as I turn the jar. If you want a tight seal you really need screw top jars.

Is it? Mine seem pretty sealed, though I tend to use them for storing pate and herbs and such things so not liquid! (once some things have set at least) I guess I would not expect them to be air tight! Depends on what OP means by not sealed I guess.

NaughtiusMaximus

Carrot007 said:

NaughtiusMaximus said:

If it is kilner jars that's normal.

I use them for making liquers, part of the process for which is turning the jar over for the first few days until all the sugar has disolved. There is invariably a small amount of leakage, which I mitigate by holding the jar in such a was as I press down on the lid as I turn the jar. If you want a tight seal you really need screw top jars.

Is it? Mine seem pretty sealed, though I tend to use them for storing pate and herbs and such things so not liquid! (once some things have set at least) I guess I would not expect them to be air tight! Depends on what OP means by not sealed I guess.

Definitely the case with all the ones I've used, whether it's by design or just shoddy manufacturing is another question.

greyteam1959

Black_Cat2 said:

Not sure if can use 'product placement' here but are you talking along the lines of kilner jars with the rubber seal which can be removed? 

Yes........

greyteam1959

Carrot007 said:

NaughtiusMaximus said:

If it is kilner jars that's normal.

I use them for making liquers, part of the process for which is turning the jar over for the first few days until all the sugar has disolved. There is invariably a small amount of leakage, which I mitigate by holding the jar in such a was as I press down on the lid as I turn the jar. If you want a tight seal you really need screw top jars.

Is it? Mine seem pretty sealed, though I tend to use them for storing pate and herbs and such things so not liquid! (once some things have set at least) I guess I would not expect them to be air tight! Depends on what OP means by not sealed I guess.

By not sealed I mean not sealed.
On most of the jars when you release the clip the lid stays down until you pull on the tab on the seal. The lid then pops up as the seal is broken.
The jars that have no seal the lid just lifts after removing the clip.

Black_Cat2

Not sure I follow atm... I have kilner jars which when you pop the clip up releases the lid up (like a spring action) and the contents are accessible.  None of my jars stay closed when I pop the clip up? Can I ask if that is the problem you are talking about? 🐈

greyteam1959

Yes it is.
Initially when the jars are opened you should have to release the vacuum created in the jar by hot filling by pulling in the tab on the rubber seal.
If the lid just pops up the is no vacuum seal & the contents could be spoilt.

-taff

Those jars don't normally create a vacuum. They are for things like jam, picallili, things in oil and/or vinegar.

If you wanted to create a proper vacuum seal, you need the normal kilner type jars and screw on lids with separate metal lid or the metal lid like you get with quattro stagioni jars.