Superb Regular Mouth Canning Lid 60 pk

Features

• Bluseal integrity, proprietary, food-safe material developed for a stronger seal, more sealing power prevents buckling, safe to use with high pressure canners
• Poplok assurance - the distinctive pop feature provides an audible and visual assurance of seal integrity through site, sound, and touch
• Quintek protection - five layers of interior and exterior corrosion protection surrounding a steel core
• Recommend tightening with three fingers to ensure the correct tightness, do not over-tighten for a proper seal
• More sealing power prevents buckling, safe to use with high pressure canners