Good post Finster. I tried those white lids last year canning a bunch of 1lb deer cubes in pint jars. I had a lot of failures. I liked the idea of the multiple use, but am now skeptical of them. I may have done something wrong, but my mom was helping me and she's been canning for over 65 years. Not sure what we did wrong.
This is another good resource that should be in all of our homes........
https://www.goodreads.com/book/show...ausage-making-how-to-cure-hams-shouldersThe fact your Mama has been canning for so long may be why you had problems. Those reusable lids are NOT used the same way as normal lids. Your mama likely canned them like she always did, fingertip tight, put them in and process, take them out and let them cool and don't dare touch them for 24 hours.... which is the exact WRONG way to use reusable lids.
With the reusable lids, you tighten then fingertip tight then back it off a little, so they're looser than fingertip tight. Process them and then as SOON as you take them out, tighten them up... which goes against everything long time canners consider gospel.
I have no knowlege of them personally , so can't say , just know the lids are not what they used to be.
Just glad I got lucky and did what I did years ago.
Will say even that process seems strange , as food can get under the lids easier.
The idea is to let steam and air out , but keep the food in , that's why you tighten the rings to finger tight.
Never use rubber rings for seals , like with the glass lids with a bail lock, or the zink lids .
So can't say anything about them.
All I know as fact is that the lids of today aren't what they used to be.
Have around a 700 jars from years of collecting them.
99% Are old jars , only a few from the last 10 years are younger than 20 years old.
Fact of the mater still stands , like the OP seems they don't want us to preserve food any more.
Makes you wonder what's in canned goods from the store.