Easy to use: simply directly replace the yellowed and worn old silicone seals with our silicone sealing rings for glass sealed food jars Jar Replacement Canning rings are the perfect tool to keep food freshly and intact This silicone gaskets is a good replacement for replacing damaged seals These seals for jars are great for storing fruit and vegetables, homemade food, toiletries, soaps, paints and craft supplies They can effectively the and air from entering it and keep your food clean and safe better