[Easy to Replace] – Old rubber gaskets wear out over time and need to be replaced to work properly and protect your jars. Simply remove the old one and snap the new one onto the lid in under a minute. [Reusable Easy to Clean] – Our sealing rings are soft, smooth, and easy to care for. Simply wash them with warm water and a little detergent when needed. [Keep Your Food Fresh] – The silicone seal ensures an airtight seal, for longer storage of soup, yogurt, sports drinks, cereal, candy, etc. [Durable Material] – Made of well-silicone material, our replacement seals are stable, and durable, heat tolerant, ensuring your food stays fresh. [Basic Size] – The size of these silicone jar gaskets fits a regular mouth(70mm 2.76″), its thickness is 3mm, and there are 12pcs replacement silicone seals in one package, providing enough quantity for you and your family to use and replace.