Package Included: You will get 12 silicone seals in total, enough for your daily use and replacement. High Quality Material: These jar seals spare parts are made of high quality silicone, soft and durable, safe to use in a freezer, not easily deformed or broken, easy to replace and keep your canned food clean.li> AIRTIGHT AND REPLACEMENT: These sealing rings can replace your broken or old jars and help create an airtight and leak-proof seal for good preserve your food and odor free.Universal: Each jar seal has an outside diameter of 3.7 inches, an inside diameter of 2.7 inches and a thickness of 0.8 inches, and is 39; fits mason jars and most regular or wide mouth jars. Note: The glass gaskets are flexible enough to stretch a little to fit inside. can.WIDE APPLICATION: Our silicone mason jar sealing rings can be used to store fruits and vegetables, homemade food, toiletries, paint, produce handmade and more. LRFR is committed to providing each customer with the highest standard of customer service.