AIRTIGHT SEALING jar lids for mason jars that provide vapor-proof sealing and prevent warping under HIGH TEMPS AND PRESSURE. Each mason jar lid is PRECISELY MILLED to deliver 100% compatibility to Ball or Kerr regular mason jar lids. ANTI-RUST regular mason jar lids made of stainless steel layered with tinplate coating to prevent corrosion or rusting, even if the regular canning lids are exposed to acidic or salty substances. SMUDGE-PROOF. Our regular mouth lids for mason jars sport a smooth surface that prevents smudging for CLEAR LABELS, even when the mason jar canning lids are stored in the freezer. DENT-RESISTANT. These mason jars lids regular mouth withstand regular water bath and pressure canning. These regular mouth lids for mason jars deliver high-pressure canning seals for 5+ years. PERFECT FIT. Our lids for canning jars have a FOOD-GRADE BPA-free silicone seal, ensuring 100% fit on regular mouth mason jar lids. Ensure that the middle dimple is fully recessed for a complete seal.
