Superb Wide Mouth Canning Lid (60-Count)-

Superb canning lids have a specially formulated adhesive that is thicker and wider to seal on virtually all mason style jars. Locally USA made in Ohio by a family owned business. Do not over-tighten for a proper seal. Recommend tightening with three fingers to ensure the right tightness. The distinctive pop feature provides an audible and visual assurance of seal integrity. Made with five layers of corrosion protection. BluSeal Integrity offers more sealing power designed to prevent buckling, making these jar lids safe to use with high pressure canners. Look for the blue seal.