ForJars’ Gem‑Mouth Lids are specially designed for gem-size canning jars with a 78 mm opening — a niche size between regular and wide-mouth jars. These lids feature a soft, BPA-free silicone seal on the underside and are made from rust-resistant, food-grade metal, ensuring an airtight seal that can last up to 18 months. While intended for single use during wet canning, they can be r... https://forjars.co/collections/gem-mouth-lids