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None+eKPsnLeovesd /r/fermentation
1 point
1970-01-19 18:33:05.604 +0000 UTC

They are metal in an acidic environment they are going to rust. I use plastic ones for storage, https://www.amazon.com/gp/product/B07T1G5JDZ/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1. They have a rubber grommet so waterproof. If you close them too tight you will never get them off though or if they form a vacuum. Fixed the rusting problem thought.