Replacement Lid O-ring for FerMonster Fermenters

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Replacement Lid O-Ring for FerMonster Fermenters Replacement Lid O-Ring This replacement lid O-ring helps restore the seal on compatible FerMonster fermenters when the original gas ket is worn, missing, or damaged. Best Uses Use it during fermenter maintenance or when a lid no longer seals reliably. A good spare for brewers who keep FerMonster fermenters in regular rotation. Helps support normal airlock or fermentation sealing when the lid and vessel are compatible. Fit and Setup Notes Inspect the lid groove and gasket before each batch. Clean and sanitize the O-ring before use, and replace it if it becomes cracked, stretched, or difficult to seat. For related supplies, browse fermenters and accessories, brewing equipment. Show more