How do you get rust off mason jar lids?
Category:
food and drink
cooking
Vinegar dissolves rust. Soak them and then wipe it off. You need to abrade the rust off somehow -- there really is no other way. A sandblaster would be best, or sandpaper if you don't have access to one.
Similarly one may ask, is rust on mason jar lids dangerous?
rust is not toxic. it is iron oxide. do not use lids with rust on the interior - canning acid stuff with rust already started will let the acid stuff eat through the steel.
Moreover, why do my mason jar lids rust?
They don't rust. Again, those two-piece mason jar lids are technically meant for canning and they're meant for one-time use. So, over time, they're most likely going to rust. These other lids are meant to be used over and over again and they're coated, so they won't rust.
The acid in everyday distilled white vinegar, with the aid of salt, will eat through the rust and corrosion afflicting the metal, making it possible for you to scrub it off later with an abrasive pad.