The Kilner Rubber Seals Set of 6 is designed to fit Clip Top Jars in 12, 17, 34, 51, and 68 ounce sizes. Made from BPA-free, food-safe rubber, these reusable seals maintain an airtight closure to keep food fresher for longer. Perfect for preserving jams, chutneys, and pickles or storing dry goods, they are a practical and eco-friendly accessory for every kitchen.