Product description Material: silicone Dimensions: The inner diameter of the ring is 6.9 cm, the outer diameter of the ring is 9.5 cm, and the thickness is 0.22 cm Quantity: 12 piecesPackage Contents: 12 * Mason Jar Lid Sealing Ring 1. Package Contents: You will receive a total of 12 pieces of silicone seals, enough for your daily use and replacement. 2. High material: These replacement glass seals are made of high quality silicone, are soft and durable, can be safely used in a freezer, are not easy to be deformed or broken, and are convenient to replace and keep your canned food clean. 3. Airtight and replacement: These sealing rings can replace your broken or old jars and help to create an airtight and leak-proof seal for mason jars to preserve your food well without odor nuisance. 4. Universal: Each glass seal change measures 9.4 cm outside diameter, 6.8 cm inside diameter and 0.22 cm thick and is suitable for mason jars and most normal or wide neck jars. Note: The glass seals are soft enough to stretch a little to fit inside the can. 5. Wide application: Our silicone mason jar sealing rings can be used to store fruits and vegetables, homemade foods, toiletries, paints, handmade products and much more.