Cuasting 50 Pack Airlock Grommet, Fermenter Cover for Mason Jars, Straws, Airlock, Beer, Wine, Plastic Barrel Cooker Cover, 1.59 cm OD and 0.95 cm ID

Quantity and size: you will get 50 arilock grommet with an outer diameter of 5/8 inches and an inner diameter of 3/8 inches; You need to drill a 5/8 inches hole in the fermenter lid; Then the airlock grommet is very easy to insert cover hole Hermetic sealing: this silicone grommet is well combined with the airlock and has a good hermetic seal to prevent oxygen from entering the fermenter; This helps to keep the enzyme fermented for a long time Good performance: this fermenter lid grommet is easy to install into the lid and hermetically sealed to protect food from oxygen; You can use this amazing product with airlocks to keep the fermentation for a longer period of time Quality materials: our arilock grommet is made of durable silicone and PBA which is durable and resistant to high temperatures for long-term use Wide use: this airlock gasket is suitable for any type of airlock and plastic lid and straw; Use these silicone gaskets to convert Mason jars into airlock fermentation vessels