Jar neck size: 33-400

or even as a decorative piece in your home

salad dressing

use for children's small toys and craft & bead projects

About 2 1/2 inches thick

Silicone Seal Rings for Mason Jar Lids (Wide Mouth, Case of 2400) screw cap bottles Jar neck size: 33-400Keep in liquids, keep out bugs and moisture. All the things you need for an airtight seal are provided by these silicone rings. Our silicone rings fit our own brand of plastic mason jar lids but they also are compatible with major brands like Ball and Kerr. In addition, if you have one piece metal lids, these will provide a sturdy liner. If you currently have lids with foam liners, throw the foam liners away and enjoy our easy clean silicone liners.