Superb Canning Lids Wide Mouth – 12 Bakers Dozens-156 lids Superb Canning Lids are made in the USA PopLok Assurance Clear confirmation of seal integrity through site, sound, and touch. Our 5 Layers of protection offer a rust-free, tighter seal with corrosive resistance BPA Free AND FDA Compliant seals means no contaminants in your food Our lids are safe for pressure canning, water bath canning, and general storage Superb Seals are thicker, which translates in every way to a better, more reliable seal Our tight tolerance and background in engineering ensures that Superb Lids produce a leak-free vacuum seal when used properly Extra width to the outside ring gives you the peace of mind that the seal is touching the entire lip of the jar Stress-free experience overall