High-quality MaterialsMade of high-quality silicone, these jar seals are flexible, wear-resistant, and not easy to crack, making them a long-lasting, durable and reusable choice to keep your jars sealed and keep the contents fresh. Versatile Leak-proof SealThese silicone seals provide a reliable, leak-proof seal, ensuring that the food you store stays fresh and does not spill. Easy to UseThese rubber seals for glass jars are a breeze to install and remove. Their soft and flexible design makes them easy to install on glass jar lids, and removal for cleaning is also quick and easy. Package ListThe package includes 6 pcs silicone jar gaskets, designed for glass jars with 3.5 inch openings (inner diameter: 3.5 inches, outer diameter: 4.5 inches), ensuring a secure seal. Wide ApplicationThese canning jar lids rings are ideal for preserving jams, sauces, pickles and other homemade foods, and are also ideal for kitchen storage, and can be used with a variety of glass jars.