I am sick of the rust! Web searches for a stainless steel (or something non corrosive) version of the screw on rings failed. I have the Tatler lids, and Sprout People has a nice plastic ring (sold with stainless steel screen "lids" for sprouting), which I have, but would prefer metal for other applications. I make yoghart in the jars. The rust stains the glass, and is hard to scrub off.
Liefheit makes some high end canning jars, and $8.95 (Dinnerware Depot) IIRC, will get one 12 replacement rings, but I can't find any information on what they are made of either. I have some vintage canning jars with a heavy metal lid (zinc?/ aluminum?) and plastic liner that show no corrosion - so, good ones were made one-upon-a-time.
I like decorative glass jars with the separate rubber seal, the ss bale, and the glass lid, but they are much clumbsier to wash than the simple pint size wide mouth canning jars.
Do stainless steel rings exist?