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Smart Vacuum Indicator Canning Lids — 82mm SKO (Pack of 50)

Product Description: Upgrade your home canning and food preservation with Knopka Kontroler innovative safety-button lids. Designed with built-in visual seal verification, these lids take the guesswork out of jarring by clearly showing whether your jars are airtight and safe.

Key Features & Innovation:

• Visual Vacuum Indicator ("Safety Button"): Pops up or indents to show vacuum pressure instantly after seaming. If a seal fails or minor microbial activity begins during storage, the button alerts you early—giving you the chance to re-sterilize and save your food before full spoilage occurs.

• Early Spoilage Detection: Detects subtle pressure changes and degradation during long-term pantry storage that standard flat lids completely miss.

• Reinforced Seaming Edge (Anti-Rust Curl): Engineered with double-thickness metal along the crimping rim and a curled protective edge. This eliminates raw metal exposure (preventing edge rust) and ensures smooth, wave-free crimping with manual or semi-automatic can seamers.

• Usage Recommendation: Ideal for all standard hot-fill, water-bath canning, pickles, jams, compotes, and vegetables. (Note: Not recommended for high-pressure autoclave retort canning).

• Designed for standard 82mm neck glass jars (crimp-on / sealing tool required).

Package contents: 1 pack of 50 sealing lids (82 mm).