Stoppers, Bungs & Airlocks

#12 natural latex rubber stopper with 3/8 inch hole. To create a solid stopper, simply use a #000 solid stopper (FE400) to plug the hole. Top diameter 64 mm, bottom diameter 54 mm, length 27 mm

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Extra large 3-piece airlock that can hold 50% more sanitizer or water than the standard size (FE370). For both carboys and buckets. In our opinion, 3-piece airlocks are superior to the triple ripple type in that they can be taken apart and cleaned. However, we do sell the triple-ripple (or S-Shaped) type airlock (FE371), in case that's your preference.   Please Note: Stopper Not Included.

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Expansion stopper for sealing beer, wine, and other narrow neck bottles. Simply insert the expansion stopper into the neck of the bottle, press the lever down, and the bottle will hold carbonation and liquids inside. Great for saving a partial bottle of beer or wine while keeping a good seal on the bottle.

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#5 1/2 natural latex rubber stopper with 3/8 inch hole. Also called a size 5.5.   Size: 0.94 - 1.1 inches To create a solid stopper, simply use a #000 solid stopper (FE400) to plug the hole.

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#7.5 stopper - with 3/8 inch hole. Top diameter 1.5 inches (39 mm), bottom diameter 1.22 inches (31 mm), length 1 inch (25 mm). BPA-free stopper made of food grade materials. Injection molded TPE for superior consistency throughout. Perfect for use with carboys, as the material sticks well to glass and PET, even when wet. To create a solid stopper, simply use a #000 solid stopper (FE400) to plug the hole. Max. Temperature Rating: 158 °F (70 °C).

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#2 stopper - solid. Top diameter 0.83 inches (21 mm), bottom diameter 0.63 inches (15.8 mm), length 1 inch (25 mm). BPA-free stopper made of food grade materials. Injection molded TPE for superior consistency throughout. Perfect for use with carboys, as the material sticks well to glass and PET, even when wet.  Max. Temperature Rating: 158 °F (70 °C).

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Secure Fit: Designed with a ridge and gentle taper to prevent slipping or being sucked in, ensuring a reliable seal during use. Self-Sealing Vent: Equipped with vent holes that allow air to escape but prevent it from entering the fermenter. Easy Maintenance: Simple to clean and sanitize, making it highly convenient for repeated use. Replaces stopper sizes #8 and #9 This CellarScience Bung has a ridge to keep it from getting sucked in and self-sealing vent holes to let air out but not in. They have a gentle taper, so they don’t slip out during use.  They are also very easy to clean and sanitize. Replaces Stopper Sizes #8, #9 Stopper Measurements: 1.36" x 1.89" (34.5 mm x 48 mm) The flapper stopper protrudes roughly 2.5" from the stopper to allow for easy assembly Other available sizes include the Breathable Carboy Bung and the Breathable Barrel Bung. All three size options can be purchased in one complete bundle with the Breather Bung Pack.

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This stopper has two holes and we use it in the production of our #6.5 stopper thermowell. It features one 3/8" hole and one 1/4" hole. A racking tube or stainless tube can be inserted into the 1/4" hole with the aid of some lubrifilm, forming an airtight seal, and the 3/8" hole fits an airlock. Even after you wedge all this junk into it, it still fits a carboy neck! Also fits perfectly into a 1.5" tri-clamp ferrule, and the stopper's flange will ensure it doesn't fall in. Use this in any configuration you can think of, it'll fit: Airlocks, Thermowells, Racking Canes, and anything else you can imagine!

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Securely bung your full-size barrels with this locking bung. Great for tight bunging barrels while rolling them on their side, moving barrels from location to location, or simply for peace of mind that this bung will not accidently get knocked out of place. A stainless plate embedded in the silicone causes the bung to expand outward when tightened. This creates considerable pressure against the bung opening, ensuring a super solid seal. Use a crescent wrench or 1/2" driver to tighten the nut on top of the bung. Bottom of bung measures 1.5" and the top of the bung measures 2.5".

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This airlock made from polypropylene is much less rigid and less likely to crack compared to standard three-piece airlocks. Toss it into a bucket of sanitizer with your other equipment and don't worry about it breaking. For both carboys and buckets. In our opinion 3-piece airlocks are superior to the triple ripple type in that they can be taken apart and cleaned. However, we do sell the triple ripple or S-shaped type in case you are used to that type and would like to stay with it. Please Note: Stopper Not Included.   KegLand Part Number: KL01595  

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Stopper #2.5 with 3/8" Hole

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#2 natural latex rubber stopper - solid. Top diameter 20 mm, bottom diameter 16 mm, length 25 mm. 67 stoppers per pound.

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If you keep your carboy in a fermentation locker or other area with little to no head space, every inch counts. We love these low-profile 2-piece airlocks for their compact size and simple design. Instead of a floating plastic "hat", the center piece is molded into the lid. One less thing to clean and misplace! This is the very smallest airlock we sell and works well with fermentations up to 7 gtallons.  Holds approximately 0.4 fl oz (12 ml) Chamber - 1-1/2" tall x 1-3/8" diameter Stem - 1" long Stopper not included

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#13 stopper - with 3/8 inch hole. Top diameter 2.64 inches (67 mm), bottom diameter 2.28 inches (58 mm), length 1 inch (25 mm). BPA-free stopper made of food grade materials. Injection molded TPE for superior consistency throughout. Perfect for use with carboys, as the material sticks well to glass and PET, even when wet. To create a solid stopper, simply use a #000 solid stopper (FE400) to plug the hole. Max. Temperature Rating: 158 °F (70 °C).

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Wooden Keg Bung. 1 27/32".    

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#12 natural latex rubber stopper - solid. Top diameter 64 mm, bottom diameter 54 mm, length 25 mm. 6 stoppers per pound.

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#8 stopper - solid. Top diameter 1.59 inches (40.5 mm), bottom diameter 1.31 inches (33 mm), length 1 inch (25 mm). BPA-free stopper made of food grade materials. Injection molded TPE for superior consistency throughout. Perfect for use with carboys, as the material sticks well to glass and PET, even when wet. To create a solid stopper, simply use a #000 solid stopper (FE400) to plug the hole. Max. Temperature Rating: 158 °F (70 °C).  

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If you keep your carboy in a fermentation locker or other area with little to no head space, every inch counts. We love these low-profile 2-piece airlocks for their compact size and simple design. Instead of a floating plastic "hat", the center piece is molded into the lid. One less thing to clean and misplace! This is the larger of the two mini airlocks we sell, holds more liquid than the smallest design, and is good for fermentations volumes up to 13 gallons.  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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#8.5 stopper - solid. Top diameter 1.66 inches (43 mm), bottom diameter 1.43 inches (36 mm), length 1 inch (25 mm). BPA-free stopper made of food grade materials. Injection molded TPE for superior consistency throughout. Perfect for use with carboys, as the material sticks well to glass and PET, even when wet. To create a solid stopper, simply use a #000 solid stopper (FE400) to plug the hole. Max. Temperature Rating: 158 °F (70 °C).

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#7.5 stopper - solid. Top diameter 1.5 inches (39 mm), bottom diameter 1.22 inches (31 mm), length 1 inch (25 mm). BPA-free stopper made of food grade materials. Injection molded TPE for superior consistency throughout. Perfect for use with carboys, as the material sticks well to glass and PET, even when wet. Max. Temperature Rating: 158 °F (70 °C).

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Designed to fit 3 to 6.5-gallon glass carboys and 500ml flasks, making it ideal for a variety of storage needs. Ribbed body and ridge prevent slipping or being sucked in, ensuring a reliable seal during long-term storage. Despite its ribbed design, this silicone bung is easy to clean and sanitize for hassle-free use. Solid Silicone bung that will fit a 3, 5, 6 or 6.5 gallon glass carboy or 500ml flask. A solid stopper is the most reliable way to keep oxygen out for long term storage. This bung has a ridge to keep it from getting sucked in when temperatures cool. It also features a ribbed body it doesn't slip out during use. Even though it isn't perfectly smooth like some other stoppers, it remains easy to clean and sanitize. The top measures 1.5" wide and the bottom is 1.13" wide. While the FE592 carboy stopper is a great, economical choice, you may also want to check out our premium, silicone carboy hood FE496 as well. Working as both a solid or a breathable bung (depending on how the plug is set), the FE496 is like getting two bungs in one!

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Due to high demand, the case of 100 is currently out of stock. Be the first to receive your items by placing a pre-order today. We will automatically ship this to you when we receive more inventory. Reusable, non-absorbent, white foam stoppers provide a snug fit, yet allow free airflow. Ideal for Erlenmeyer flasks when propogating yeast cultures.  Autoclavable up to 249°F (121°C) Fits 35-45mm inner diameter openings in graduated cylinders, tubes, and flasks Easily manipulated - springs back to original shape after use Resists alcohols, bases, esters, and dilute acids

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#13 stopper - solid. Top diameter 2.64 inches (67 mm), bottom diameter 2.28 inches (58 mm), length 1 inch (25 mm). BPA-free stopper made of food grade materials. Injection molded TPE for superior consistency throughout. Perfect for use with carboys, as the material sticks well to glass and PET, even when wet. Max. Temperature Rating: 158 °F (70 °C).

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Not sure what bung is right for you? We got your back! Get all the Breathable Bungs with this complete set. Includes: Breathable Carboy Bung Breathable Universal Bung Breathable Barrel Bung Breathable Bung for Glass Carboys A breathable Silicone stopper that acts as both a stopper and an airlock. Unique design allows CO2 pressure to escape but keeps Oxygen and airborne contamination out. This quickly became our stopper of choice for wine, and is a popular style used by numerous commercial wineries. Also has great application for beer ferments: It will create a vacuum if fermenting wort cools (as opposed to pulling water in from your traditional airlock.) Airtight seal is great for extended fermented lager when CO2 production is still present but very slight. Fits 3, 5, 6 & 6.5 gallon glass carboys, 1 gallon bottles, growlers, and 500 mL flasks. Replaces Stopper Sizes #6, #6.5, #7, #8 Stopper Measurements: 0.94" x 1.48" (24 mm x 37.5 mm) Universal Breathable Bung This CellarScience Bung has a ridge to keep it from getting sucked in and self-sealing vent holes to let air out but not in. They have a gentle taper, so they don’t slip out during use.  They are also very easy to clean and sanitize. This a perfect fit for a 1.5” TC ferrules, Fermonsters, and Vintage Shop Plastic carboys. Replaces Stopper Sizes #8, #9. #10 Stopper Measurements: 1.36" x 1.89" (34.5 mm x 48 mm) Breathable Barrel Bung We recently discovered this premium breathable silicone barrel bung and were immediately impressed with its robust design and features. To start with, the ridge really helps make bung removal effortless. 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. Fits 30- and 60-gallon barrels as well as the hole in the lid of most Variable Volume tanks! Also fits perfectly in a 2" tri-clamp ferrule Replaces Stopper Sizes #10 , #11, #12 Stopper Measurements: 1.65" x 2.19" (42 mm x 55.5 mm) The flapper stopper protrudes roughly 2.5" from the stopper

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