Return to the Harvest Forum | Post a Follow-Up

Jars that don't seal

Posted by carmen_grower_2007 4/5 (My Page) on
Mon, Sep 28, 09 at 15:03

Can I vacuum-pack jars that don't seal with a new lid while they are still piping hot? If not, why not please. It seems if the tomato sauce has been simmering on the stove for hours and then boiling for 35 min. in a BWB, it should work.

Follow-Up Postings:

RE: Jars that don't seal

The replacement of a leaking lid is fine but you do need to reprocess the contents as before. Airborne bacteria can easily contaminate the contents even if very hot, and a new lid is placed on the reopened jar. Always be sure to use new lids, allow them to sit in hot, barely simmering water, and attach to the jars after wiping the glass rims with a damp paper towel. Always tighten using the two finger and thumb strength, unless your hands are not very strong, so then you would use 3 fingers and thumb to tighten rings snugly only. Always wait for jars to cool after they have been processed before determining if seals are leaking. All new lids have a dimple that pops in slighly, and that happens when the jars are cooling. You dont usually see that when they are first removed from the canner. Be patient, for the jars that may not indicate a vacuum until nearly cooled to room temps.

RE: Jars that don't seal

You can if you wish but it sure isn't recommended for safety reasons - airborne contamination occurs and then grows while the jar is in storage.

As Ken said the jar should be reprocessed with a new lid. That is the standard guideline.


Here is a link that might be useful: NCHFP - Canning FAQs - Jar didn't seal?

RE: Jars that don't seal

No to vacuum sealing, unless you mean to just keep it in the frig and eat it in a short period of time instead of bothering to reprocess in the canner. Not safe for long storage.

That said, I sure don't use another new lid when reprocessing. I check to see if the jar has some small defect in the lip I didn't notice before. Hubby does a lot of canning, and for some reason has a lower sealing rate than I do. I don't know what he is doing wrong. He has tried screwing the rings on tighter, no help, and then tried screwing them on more loosely. Whatever, he often has a jar or two not seal in a batch. I take them apart, clean off the jar and lid and reheat the lids, and reprocess. They seal just fine.

I am thinking he maybe isn't as careful in wiping the rim of the jar before putting the lid on? We just try to have me do the lid putting on part whenever possible to avoid this problem. But I have almost never had the problem be with a new lid itself. And we can about 200 jars of stuff every year. I don't see the point of wasting good lids, they are our main expense in canning.

Of course I also reuse lids that are in great shape, and that works well, too, and I can in pickle jars and so on. You can tell if something is sealed or not, especially when you open it and hear that thunk sound of air rushing in, so I have no concerns about safety.


RE: Jars that don't seal

If the lid failed, and I didn't see any damages to the glass jar seal area, I would not reuse the lid again. Its just too risky if there was a tiny bit of something mashed into the sealing compound of the lid, that you didn't detect when examining them after reopening them. This would be typical if the jars had added dried dill weed and/or dill seeds, which can get up into the seal area. Here, I had just one single jar lid fail after doing over 500 jars in several years, and that was for a single jar of peaches which leaked out all the liquid, even though it was standing upright. It was tossed as it had been that way for quite some time.

RE: Jars that don't seal

I pull a vaccum on unseled jars but then they go into the fridge or freezer

 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!

Return to the Harvest Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Please review our Rules of Play before posting.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.

Learn more about in-text links on this page here