The Kilner Rubber Seals for 102 Ounce Clip Top Jars are designed to keep your largest jars performing at their best. Made from BPA-free, food-grade rubber, these replacement seals provide a secure, airtight closure that helps preserve freshness for homemade pickles, ferments, dry goods, or bulk pantry staples. Each pack includes six reusable rings for reliable, long-term use.