This foam stopper has a diameter of 1 3/4″. It fits a 1000ml and 2000ml flask. This material allows for airflow in and out of the flask while still keeping your brew safe.
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Fermentaholics is a team dedicated to making your homebrewing and home fermenting experience a success. From the moment you place your order, you gain immediate access to our network of fermentation experts here to help you along your journey. No matter your question or concern, we are here to provide the correct guidance and support to help you accomplish your fermentation goals. From batch to batch and brew to brew, we’ve got your back.