Reusable Seals for *REGULAR MOUTH* Mason Jar Lids.for Regular Mouth Mason Jars are 2 3/8 inch Internal Diameter and these *REGULAR MOUTH* sealing rings are seals are 70mm (2.75 inch) outside diameter Leak Proof, , Durable, & Better Designed! Designed for Ball caps,torage lids, and many other lids. Our rings are competitors by being made thicker and with a groove for a secure fit. The groove goes up, toward the top of the lid. these seals are dishwasher, freezer, and microwave safe! VERSATILE: Perfect for fridge and freezer , pantry , transporting food or beverage without leaking, fermenting lids, and much more! Not for canning. One piece plastic or metal lids are super convenient when you are storing things in the fridge or pantry, but of are not and leak proof. These seals will fix ! Holding the lid under hot running water will help if you are having removing the lid colour:white Material:Silica size:The regular mouth seals are 70mm outside diameter Package Contents: 24*Gaskets Sealing Rings,Jars and Lids are not included Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.