Canning jar rubbers without tabs are preferred for their simplicity and reliable sealing ability when canning foods. The lack of tabs allows for a smooth, continuous seal between the rubber and the jar lid, preventing potential gaps that could compromise the vacuum seal. This seamless design ensures an airtight closure, which is crucial for preserving the safety and quality of canned goods over an extended period. Without tabs, the rubbers can create a tighter, more uniform seal around the entire circumference of the lid, minimizing the risk of spoilage or contamination.Natural rubber gaskets/sealing rings fit Ball, Corona, Jewel, Crown, and Gem mason jars.Pack of 24. Orange in color. Dimensions: 2-13/16"OD, 2-5/16"ID. Thickness: 5/64". Made in Sri Lanka.