Airlocks & Stoppers

The S-Shape Airlock is a good choice for containers between 1 and 5 gallons in volume or when a slow fermentation is expected on larger batches. With this particular air lock you can detect even extremely slow fermentations on larger batches. This air lock is great for both wine and beer brewing; just fill it approximately half way with water and let the water act as an environmental barrier to keep bugs and other unwanted materials out of your batch while still allowing gasses to escape the fermentation.

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This airlock is a good choice for both wine and beer. Fill approximately half-way with a water/sanitizer mixture. The water acts as a environmental barrier keeping airborne contaminants out of your batch, but still allowing gasses to escape the fermentation.

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#6.5 tapered rubber stopper. Top Diameter: 1 3/8" Bottom Diameter: 1 1/8" Length: 1" Available either with a 3/8" drilled airlock hole in the center or solid.

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#7 tapered rubber stopper. Top Diameter: 1 7/16" Bottom Diameter: 1 3/16" Length: 1" Available either with a 3/8" drilled airlock hole in the center or solid.

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#10 tapered rubber stopper. Top Diameter: 1 15/16" Bottom Diameter: 1 5/8" Length: 1" Available either with a 3/8" drilled airlock hole in the center or solid. Fits plastic carboys.

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#6 tapered rubber stopper. Top Diameter: 1 1/8" Bottom Diameter: 1 1/16" Length: 1" Available either with a 3/8" drilled airlock hole in the center or solid.

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Replacement grommet for bucket lids,  fits in a 9/16" hole.  Standard 3/8" hole in the middle to accommodate airlocks.

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#2 tapered rubber stopper. Top Diameter: 3/4" Bottom Diameter: 5/8" Length: 1" Available either with a 3/8" drilled airlock hole in the center or solid. Fits standard beer bottles.

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This small universal stopper fits 3 gallon (12L), 5 gallon (18.9L), and 6 gallon (23L) glass carboys. Available with airlock hole or without (solid). Specifications Made of FDA materials, BPA free Made of Silicone Maximum Temperature: 180 °C (356 °F). Measurements Bottom Diameter: 1.18" (30.17mm) Top Diameter: 1.58" (40.1mm) Length: 1.45" (36.85mm) Wall Thickness: 0.15" (3.95mm) Hole Diameter: 0.33" (8.5mm)

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#3 tapered rubber stopper. Top Diameter: 15/16" Bottom Diameter: 23/32" Length: 1" Available either with a 3/8" drilled airlock hole in the center or solid.

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#8 tapered rubber stopper. Top Diameter: 1 5/8" Bottom Diameter: 1 3/8" Length: 1" Available either with a 3/8" drilled airlock hole in the center or solid.

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This airlock is a good choice for both wine and beer. Fill approximately half-way with a water/sanitizer mixture. The water acts as a environmental barrier keeping airborne contaminants out of your batch, but still allowing gasses to escape the fermentation. Holds approximately 0.67 fl oz (20 ml) Chamber - 1-5/8" tall x 1-3/4" diameter Stem - 1-1/4" long Stopper not included

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#7.5 tapered rubber stopper. Top Diameter: 1 1/2" Bottom Diameter: 1 1/4" Length: 1" Available either with a 3/8" drilled airlock hole in the center or solid.

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#000 tapered rubber stopper. Top Diameter: 1/2" (12.7 mm)  Bottom Diameter: 21/64" (8.2 mm) Length: 53/64" (21 mm) Plugs hole in drilled stoppers.

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#5 tapered rubber stopper. Top Diameter: 1 1/16" Bottom Diameter: 15/16" Length: 1" Available either with a 3/8" drilled airlock hole in the center or solid.

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#5.5 tapered rubber stopper. Top Diameter: 1 1/8" Bottom Diameter: 1" Length: 1" Available either with a 3/8" drilled airlock hole in the center or solid.

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#8.5 tapered rubber stopper. Top Diameter: 1 11/16" Bottom Diameter: 1 7/16" Length: 1" Available either with a 3/8" drilled airlock hole in the center or solid.

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This Carboy Cap fits 3, 5, and 6 gallon carboys (does not fit 6.5 gallon carboys). It fits tightly around the carboy mouth, and the two openings are convenient for attaching or inserting tubes, airlocks, siphons, or racking canes. Caps for both openings are included.

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#9 tapered rubber stopper. Top Diameter: 1 3/4" Bottom Diameter: 1 1/2" Length: 1" Available either with a 3/8" drilled airlock hole in the center or solid.

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#11 tapered rubber stopper. Top Diameter: 2 1/4" Bottom Diameter: 1 15/16" Length: 1" Available either with a 3/8" drilled airlock hole in the center or solid.

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#9.5 tapered rubber stopper. Top Diameter: 1 13/16" Bottom Diameter: 1 1/2" Length: 1" With a 3/8" drilled airlock hole in the center.

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#4 Rubber Stopper   Top Diameter: 1" Bottom Diameter: 3/4" Length: 1"

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This small universal stopper fits plastic (PET) carboys, Fermonster lids, and narrow neck Demijohns. Available with airlock hole or without (solid). Specifications Made of FDA materials, BPA free Made of Silicone Maximum Temperature: 180 °C (356 °F). Measurements Bottom Diameter: 1.69" (43.1mm) Top Diameter (at the lip): 2.09" (53.25mm) Length: 1.45" (36.85mm) Wall Thickness: 0.16" (4.15mm) Hole Diameter: 0.33" (8.5mm)

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This #6.5 silicone stopper fits glass carboys or 1.5" tri-clamp ferrules. It has two drilled holes to accomodate racking canes, thermowells, and airlocks.  One hole is 3/8" that will fit an airlock and the other hole is 1/4" that will fit a racking cane or thermowell.  You may need some lubricant to aid a racking cane or thermowell through the hole.  

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#11.5 tapered rubber stopper. Top Diameter: 2 1/2" Bottom Diameter: 2" Length: 1" Available either with a 3/8" drilled airlock hole in the center or solid.

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#10.5 tapered rubber stopper. Top Diameter: 2 1/16" Bottom Diameter: 1 3/4" Length: 1" Available either with a 3/8" drilled airlock hole in the center or solid.

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#7 silicone stopper for sealing glass carboys. Ideal for long term storage of product in glass carboys.

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Wooden bung, 1 15/16", fits commercial beer kegs.

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#12 tapered rubber stopper. Top Diameter: 2 9/16" Bottom Diameter: 2 1/8" Length: 1" With a 3/8" drilled airlock hole in the center.

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Reusable high density white foam plugs for test tubes and flasks. Fits 35-45mm openings.

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This premium breathable silicone barrel bung has some impressive features and design.  To start with, the built in tabs really help make bung removal effortless. But where the bung really shines is in its two-piece design. When set to the open position, the bung acts as an airlock and allows the release of CO2 while maintaining a seal against oxygen coming in. This makes the bung ideal for alcoholic or malolactic fermentation in barrels or tanks. When fermentation is over and you no longer want the bung to "breathe" out, you just push the center cap into the bung to create a firm seal and it becomes a solid stopper!Fits most 30 and 60 gallon barrels as well as the hole in the lid of most Variable Volume tanks!Tapers from 1 7/8" to 2 1/4" diameter

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Replacement airlock for Speidel fermenters and stoppers.

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Carboy cap for 6.5 gallon glass threaded style carboys.

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Replacement airlock grommet for pail lids. Easy removal for cleaning and sanitizing.

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Buon Vino stoppers have a longer taper to help produce a better fit and a snug seal, and a lip which prevents them from falling into your container. Available with a 3/8 inch hole for an airlock, or solid with no hole. #8-9 (medium) size is recommended for medium size barrels and 9 gallon demijohns.

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Silicone barrel bung for full size commercial wine barrels.

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