Mason Jar Lid Sizes and Types

Standard Lid Sizes

Mason jars typically come with two lid sizes: Regular Mouth (70mm) and Wide Mouth (86mm).

Ball Jar Lids

Ball jars are equipped with a standard two-piece lid. This includes a flat disk with an inbuilt seal (the lid) and a separate screw band (the band) that holds the flat lid in place during heat processing.

Alternative Lid Options

One-piece metal lids can be used as a replacement for the two-piece lid during heat processing. Plastic lids, on the other hand, are strictly for dry storage and preserving processes that do not involve heat.