Description Reviews Stainless Steel Storage Lid for Wide Mouth Mason Jars - NO RETAIL PACKAGING AVAILABLE AT THIS TIME Reusable jar lids made of stainless steel and silicone Fits any wide-mouth canning jar Not for use with traditional canning. EcoJarz Stainless Steel Storage Lids are BPA-free and rust-proof storage lids for mason jars. We design them for storing your food, dry goods, vinegars, essential oils, knick-knacks, or whatever else you like to store in your jars, without the worry of rust or chemical leach. They are not for use with traditional canning. Made of 18-8 food grade 304 stainless steel, with an FDA-approved silicone gasket to prevent spills and leaks. Sold as a single lid or in multipacks.