I am away from home, did not bring a canner, but wanted to do some testing of these silicone rings with used metal lids.
First I tried filling jars up to the usual level with hot water, setting the ring (groove side on glass), lid and ring, then setting into a hot crock pot filled with water and covered for an hour. When removing, I cranked down on the rings as one would do for Tattler lids, then set them into a freezer to get them good and cold. I did a standard and wide quart. Both lid buttons depressed, but the seals broke when I took the rings off.
These rings are a bit larger in diameter than the rubber Tattler seals, also kind of sticky against the rings.
I considered that since the water did not get extremely hot in the crock pot, like it would in a pressure canner, the vacuum might not be as strong.
I repeated the experiment with the very same lids, rings and jars, but this time I filled them with water to just over the shoulder of the jars (ca 7/8 full) to allow more air to expand and contract. When I was removing the rings, I pressed hard on the center of each lid to stabilize against torque. Both lids sealed very well.
These were the more expensive seals sold on Amazon/dozen.
I can't tell the difference in the inexpensive ones sold in a much larger package. I will of course repeat the experiment with those.
I know the subject here is canning meat. I know the shelf life is supposed to be one year. Just want to say that I have seen some stored foods (like pickles) eat right through metal lids in relatively little time.
First I tried filling jars up to the usual level with hot water, setting the ring (groove side on glass), lid and ring, then setting into a hot crock pot filled with water and covered for an hour. When removing, I cranked down on the rings as one would do for Tattler lids, then set them into a freezer to get them good and cold. I did a standard and wide quart. Both lid buttons depressed, but the seals broke when I took the rings off.
These rings are a bit larger in diameter than the rubber Tattler seals, also kind of sticky against the rings.
I considered that since the water did not get extremely hot in the crock pot, like it would in a pressure canner, the vacuum might not be as strong.
I repeated the experiment with the very same lids, rings and jars, but this time I filled them with water to just over the shoulder of the jars (ca 7/8 full) to allow more air to expand and contract. When I was removing the rings, I pressed hard on the center of each lid to stabilize against torque. Both lids sealed very well.
These were the more expensive seals sold on Amazon/dozen.
I can't tell the difference in the inexpensive ones sold in a much larger package. I will of course repeat the experiment with those.
I know the subject here is canning meat. I know the shelf life is supposed to be one year. Just want to say that I have seen some stored foods (like pickles) eat right through metal lids in relatively little time.