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Is it okay to store the canned goods without the ring screwed on it? I know someone who removes the screwed rings off her jars once they're processed and then stores her jars with the seal lids only.

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Thanks for all your advice :) –  linda Sep 11 '11 at 2:04

3 Answers 3

My grandmother always removed the rings because she said if there was any juice or moisture inside the ring, it would cause rust that could break the seal.

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If the jars are properly sealed the vacuum in the jar and the waxed edge will hold the lid safely sealed. Undisturbed those jars will remain sealed until they are opened. The ring will reduce the risk of "unintentional" opening and that is really all the ring does. There are two real advantages to removing the ring once the seal is set.

  1. If something spoils in the jar it is likely to pop the lid open. Spoilage would give off gasses that would increase the pressure inside the jar and break the seal. This is more obvious if the ring has been removed.
  2. When it comes to juices, unintended fermentation is an issue. Even if raised to a temperature that is expected to kill yeast sometimes some of the little buggers get through and will ferment juices. Without the ring the fermentation breaks the seal. This prevents jars from exploding under pressure (yes, it can happen). I had a grandmother who would can grape juice, but did not want 'wine'. When the lids popped it identified the jars that had fermented, and which could be disposed (sometimes not the way grandma intended).

I prefer to leave the rings on as when the jars get stacked up in the pantry jars can get jostled and a lid may get accidentally opened, but there is nothing "wrong" with taking them off.

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Note if you want to store it with the rings, you should take them off after the jar has cooled and let it dry out for a day or two. Keeping the ring on without doing so could lead to rust forming inside, and could compromise the seal. I prefer using the plastic caps one everything is dry. It serves the same purpose as the ring, but provides a nice cap when opening the jar. Makes for a good presentation when giving away canned goods as gifts, too. –  JSM Aug 18 at 16:15
    
On the other hand, you'll want the ring once you open the jar, so it's nice for it to just be there, especially if you're giving canned goods as gifts. –  Jefromi Aug 26 at 18:02

Yup, its perfectly fine. The seal protects the food, not the ring. At worst it makes them a little more susceptible to bumps that could break the seal (but it'd have to be a significant 'bump').

If the seal were to break and the ring were in place, the food still wouldn't be properly protected.

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If the seal is broken the ring will keep the food from spilling everywhere- again not an issue if you are careful with your jars. –  Sobachatina Sep 9 '11 at 15:48

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