Silicone Fermentation Airlock for Mason Jars

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Ships free with orders over $75, or $8 USA / $5 MI flat rate shipping under $75.

$2.99

Perfect for mason jar food fermentations. The one-way silicone airlock allows gas from fermentation activity to escape without letting oxygen in. No need to burp the jar or mess with water-filled cup airlocks. Fits most wide-mouth mason jars, and can be used with the standard metal locking ring for the lid.