Yes, I reused about a dozen of them for canning potatoes and pumpkin around December. They seal real nice and I'm hooked. A lady I know over in Wyoming who's a "canning machine" has been using them for a while now, and she's the one who recommended them to me. She said she hasn't thrown one away yet after using them several times. I'm a huge fan, because I hate having to buy new lids knowing they expire, and that I'll need to throw them out after one use. I also like the fact they're made in the U.S.A. and that they're BPA free.