Large Universal Stopper with Hole

Large Universal Stopper with Hole

This large universal stopper with a hole is a drilled fermentation closure for compatible fermenters, jugs, carboys, and vessels that need an airlock or similar inserted fitting. The tapered universal shape helps cover a range of vessel openings, but fit still needs to be checked against the actual vessel.

Use it when a normal solid stopper will not work because fermentation gas needs a controlled path out of the vessel. It is useful for beer, wine, cider, mead, hard seltzer, yeast starters, and small fermentation projects where this larger stopper size fits securely.

Best Uses

• Airlock setups: center hole accepts compatible fermentation airlocks where the stem fit is correct.
• Mixed vessel shelves: helpful when you need a stopper shape that can fit more than one compatible opening.
• Carboys and jugs: useful for larger openings that are too wide for small numbered stoppers.
• Fermentation prep: a practical spare for replacing old, stained, or loose-fitting stoppers.

Fit and Sanitation Notes

Test the stopper in the empty vessel before filling. It should seat securely without needing to be forced so deeply that removal becomes difficult. Clean and sanitize the stopper and airlock before product contact, then check that the stopper remains seated during active fermentation.

For related parts, browse our fermenters and accessories, brewing equipment, and cleaning and sanitizing collections.