Stainless Steel Rust Proof Bands / Rings for Mason, Ball, Canning Jars (5 Pack, Regular Mouth) 5 stainless steel bands / rings for Regular Mouth (2 3/8" internal diameter) Mason jars. Dishwasher safe! Perfect for drinking lids, fermentation, and lids that get used a lot. Finally you can buy stainless steel bands that will not rust with normal use! Rusted canning jar rings are a common problem, but now you can replace your old rusted bands with these higher quality stainless steel bands. No more rust on your jars, on your drinking lids, or on your hands! Stainless steel is very rust resistant. These bands will not rust with normal use, but salt water or very prolonged water contact can cause corrosion.