Keep your foods freshly preserved with Regular-Mouth Mason Jar Lids with Bands. Compatible with all Anchor Hocking and Ball regular-mouth glass mason jars, these canning jar lids offer the sealing quality that canners have trusted for generations, ensuring no oxygen gets into the canning jar so your food remains preserved just the way you created it. Whether you're preserving jam to enjoy for long periods of time or storing freshly made salad dressing for the coming week, these mason jar caps seal in freshness to keep your food tasting great. When canning, lids are for one-time use only.