You will never manually burp fermentation jars or manage external water locks again with these auto-venting silicone lids designed specifically for your standard wide-mouth mason containers.
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Continuous pressure relief: You benefit from built-in one-way channels that constantly vent CO₂ during every active culture cycle, completely eliminating the daily top-ups required by traditional airlocks.
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Precise 87mm sealing width: Each flexible ring spans exactly 3.3 inches to grip your wide-mouth glass vessels firmly, maintaining an oxygen-excluding barrier even when you stir contents inside.
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100% food-contact safety: You protect your probiotic cultures, kimchi, sauerkraut, and pickles because the BPA-free silicone remains completely odorless, stain-resistant, and chemically inert against acidic brines.
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Effortless cleaning routine: You easily separate the pliable edges to rinse away residue by hand or toss your complete five-piece mixed-color collection straight into the dishwasher rack.
