Package Contents: You will receive 12 pieces silicone pot seals in total, enough quantity for your daily use and replacement. Airtight and replacement: these silicone pot rings sealant can replace your broken or old glass jars and help create an airtight and leak-proof seal on the jars, to keep your food well without odor. Universal: Every jar seal replacement measures 9.4 cm in outer diameter, 6.8 cm in inner diameter and 0.22 cm in thickness, fits mason jars and most regular or wide mouth cans or jars. Note: The jar seals are soft enough to stretch a little to accommodate canning. Wide application: Our silicone sealing rings for canning jars can be applied for store your fruits and vegetables, homemade food, toiletries, paint, handmade products and more, perfect for refrigerator and freezer storage, pantry storage, food transport food, etc. Note: The data are all manually measured, please allow 1-3cm error due to differences in light and display, there may be color differences, please refer to the actual item received.