FastRack Drilled Rubber Stopper (#10-3 Pieces) | Solid Rubber Stopper Bungs for use with Fermentation Airlock | Durable Carboy Bung |Tapered Bung for Corking Home Brewing Glass Carboys

Size 10 Drilled Rubber Bung (3 pack)

• WHAT'S INCLUDED: With this purchase, you'll receive a set of 3 #10 rubber stoppers, each featuring a precisely drilled 3/8" center hole to accommodate standard fermentation airlocks. The tapered design ensures a snug, leak-resistant seal, while the built-in curved lip prevents the bung from slipping into the carboy. Ideal for use with large glass fermenters in homebrewing, winemaking, cider making, and other fermentation projects.
• FOOD-SAFE & DURABLE: The FastRack carboy airlock stopper is made from BPA-free, lab-grade natural rubber. Designed for long-term use, these stoppers offer strong sealing performance with excellent heat and wear resistance. Compatible with 3, 5, 6, and 6.5-gallon glass carboys.
• OUTSTANDING FEATURES: FastRack rubber stoppers drilled provide excellent grip and are air-tight on glass and other surfaces. Our tapered shape designed stoppers stay in unlike other less expensive rubber stoppers. Our high quality allows you to use our product with confidence!
• HOW IT WORKS: Plug the carboy stopper into the mouth of your carboy or fermenter and then insert the airlock. This will create an airtight seal that prevents oxygen contact during fermentation. The airlock will then let CO2 escape while preventing oxygen from going back into your brewing vessel.
• OUR COMMITMENT TO YOU: At FastRack, we stand behind the quality of our products and the trust our customers place in us. Your experience matters. If your order arrives damaged or incomplete, reach out—we’ll make it right.