Rubber Stopper with Hole #06.5 (34 x 27 x 25 mm)

Rubber Stopper with Hole #06.5 is a tapered, drilled stopper made for compatible airlocks, tubing, and brewing accessories. It's commonly used in fermentation setups where gas needs to escape through an airlock while helping reduce unwanted oxygen exposure.

Size #06.5

Top Diameter x Bottom Diameter x Length: 34 x 27 x 25 mm (1-11/32 x 1-1/16 x 1 in)

Best For

• Airlock setups on carboys, bottles, and fermentation vessels
• Tubing connections and liquid transfer
• Venting and gas release
• Beer, wine, cider, and mead fermentation

Key Features

• Tapered Shape: Helps create a snug fit in compatible openings.
• Airlock Compatible: The hole fits many compatible airlocks and tubing. Fit depends on the stem size, so confirm compatibility before use.
• Brewing and Winemaking Friendly: Suitable for homebrewing, wine, beer, cider, mead, and fermentation setups.
• Reusable: Can be cleaned and reused when properly maintained.
• Practical Replacement Part: Great for replacing worn, missing, or loose stoppers.

Need to fully close an opening instead? Choose the Solid Rubber Stopper in the same size. Rubber stoppers are available in sizes #02 to #13.

Important Use Notes

• Measure your opening and compare it with the stopper dimensions before ordering. Fit may vary by vessel style.
• Clean before first use, and sanitize before beverage or fermentation contact.
• Inspect before each use and replace if cracked, hardened, loose, or worn.
• Do not force into incompatible openings. Store clean and dry between uses.
• Not intended for pressure-building applications unless the full vessel and closure setup is confirmed suitable.

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Not sure this is the right fit, or stuck partway through a batch? We're happy to help.

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