Find the right stoppers, bungs, and airlocks to protect your wine during fermentation and aging. At MoreWine!, we offer a wide selection of silicone and rubber bungs in various sizes, plus airlocks that create a perfect seal while allowing CO₂ to escape. Whether you're working with carboys, barrels, or tanks, our winemaking stoppers and airlocks ensure a clean, controlled fermentation. Trusted by home and professional winemakers alike.
Stoppers, Bungs & Airlocks
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Airlock - 3 Piece
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 type (FE371) in case you are use to that type and would like to stay with it. Please Note: Stopper Not Included.
$3.29
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Airlock - S-Shaped
An old traditional style of airlock that is still preferred by wine makers during an ML fermentation and for longer term aging. A 3 piece style airlock (FE370) is preferred for active primary fermentation of sugar because they can be easily cleaned when they get dirty. The S-Shaped is better for long term aging because the water in the airlock has less surface area and will not evaporate as quickly. They are preferred for ML fermentation because they will show positive pressure, an indication that your ML fermentation (which are very slow and hard to detect) is working. Please Note: Stopper Not Included.
$2.89
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Universal Stopper With Hole
This stopper will fit a 2.8,3,5,6, or 6.5 gallon glass carboy (please note: Will Not Fit a Better Bottle Or Plastic Carboys). Will also fit our 500ml Erlenmyer flask. Made with a longer taper from a different material, this stopper does not pop out when wet. Extremely reliable, it is our stopper of choice for all applications involving these size carboys. Also will fit a 12 or 22 oz beer bottle when used upside down.
$1.99
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Rubber Stopper - #7 With Hole
#7 stopper - with 3/8 inch hole. Top diameter 1.43 inches (36.3 mm), bottom diameter 1.19 inches (30 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).
$2.09
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Stopper - #000 Solid
Plug the hole in other stoppers when moving or shaking the fermenter.
$0.99
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Rubber Stopper - #6 With Hole
#6 stopper - with 3/8 inch hole. Top diameter 1.25 inches (32 mm), bottom diameter 1.03 inches (26 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. For use with our 1 gallon glass jars (FE300). To create a solid stopper, simply use a #000 solid stopper (FE400) to plug the hole. Max. Temperature Rating: 158 °F (70 °C).
$1.79
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Rubber Stopper - #10 With Hole
#10 stopper - with 3/8 inch hole. Top diameter 2 inches (51 mm), bottom diameter 1.66 inches (43 mm), length 1.10 inch (28 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).
$4.49
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Universal Stopper Solid
Solid version of FE494. A new stopper that fits a 2.8,3,5,6, or 6.5 gallon glass carboy. (DOES NOT FIT BETTER BOTTLE OR PLASTIC CARBOYS) Also fits a 500ml Erlenmyer flask. Made with a longer taper from a different material, this stopper does not pop out when wet. Much more reliable, it quickly became our stopper of choice for all applications involving these size carboys.
$1.89
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Rubber Stopper - #6.5 With Hole
#6.5 stopper - with 3/8 inch hole. Top diameter 1.34 inches (34 mm), bottom diameter 1.06 inches (27 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).
$1.99
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Stopper - #5 With Hole
Size 15/16" - 1 1/16" To create a solid stopper, simply use a #000 solid stopper (FE400) to plug the hole.
$1.19
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S-Shaped Airlock & Stopper Kit (Pack of 2)
Pick up two airlock and stopper combos for a lower price! Includes two S-Shaped airlocks and two Universal Stoppers. Fits a 2.8, 3, 5, 6, or 6.5 gallon glass carboy, as well as 500ml Erlenmeyer flask. Please Note: This stopper will not fit in plastic carboys, Better Bottles or Speidel Plastic Fermenters.
$3.99
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Rubber Stopper - #7 Solid
#7 stopper - solid. Top diameter 1.43 inches (36.3 mm), bottom diameter 1.19 inches (30 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).
$2.09
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Rubber Stopper - #11 With Hole
#11 stopper - with 3/8 inch hole. Top diameter 2.17 inches (55 mm), bottom diameter 1.89 inches (48 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).
$4.99
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Rubber Stopper - #10 Solid
#10 stopper - solid. Top diameter 2 inches (51 mm), bottom diameter 1.66 inches (43 mm), length 1.10 inch (28 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).
$3.99
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CellarScience® Universal Breathable Bung | 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. 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) The flapper stopper protrudes roughly 2.5" from the stopper to allow for easy assembly Other available sizes include the Universal Breathable Bung and the Breathable Barrel Bung. All three size options can be purchased in one complete bundle with the Breather Bung Pack.
$7.69
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Stopper - #9 With Hole
Size 1 1/2" - 1 13/16" To create a solid stopper, simply use a #000 solid stopper (FE400) to plug the hole.
$2.59
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Rubber Stopper - #6 Solid
#6 stopper - solid. Top diameter 1.25 inches (32 mm), bottom diameter 1.03 inches (26 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).
$1.59
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Rubber Stopper - #2 With Hole
Stopper #2 - with 3/8 inch hole. 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. To create a solid stopper, simply use a #000 solid stopper (FE400) to plug the hole. Max. Temperature Rating: 158 °F (70 °C).
$0.99
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Rubber Stopper - #6.5 Solid
#6.5 stopper - solid. Top diameter 1.34 inches (34 mm), bottom diameter 1.06 inches (27 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).
$1.99
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Rubber Stopper - #9.5 With Hole
#9.5 stopper - with 3/8 inch hole. Top diameter 1.8 inches (46 mm), bottom diameter 1.5 inches (38 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).
$3.49
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Rubber Stopper - #11 Solid
#11 stopper - solid. Top diameter 2.17 inches (55 mm), bottom diameter 1.89 inches (48 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).
$4.69
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Rubber Stopper - #3 With Hole
#3 stopper - with 3/8 inch hole. Top diameter 0.95 inches (24 mm), bottom diameter 0.71 inches (18 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).
$1.39
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Two Hole #10 Brewmaster Silicone Stopper
This stopper has two holes and we use it in the production of our #10 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 these fittings into it, it still fits a plastic carboy neck! Use this in any configuration you can think of, it'll fit: Airlocks, Thermowells, Racking Canes, and anything else you can imagine!
$5.99
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CellarScience® Universal Breathable Bung | Wine Barrels
Effortless Bung Removal: The ridge design ensures easy and hassle-free removal of the bung, simplifying barrel management. Effective Airlock System: Acts as an airlock, allowing CO2 to escape while keeping oxygen out, making it perfect for fermentation processes. Versatile Fit: Compatible with 30- and 60-gallon barrels, Variable Volume tanks, and 2" tri-clamp ferrules, offering flexibility across various setups. Multi-Size Replacement: Replaces stopper sizes #10, #11, and #12, with precise measurements for a perfect fit and easy assembly. 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 to allow for easy assembly Other available sizes include the Breathable Carboy Bung and the Universal Breathable Bung. All three size options can be purchased in one complete bundle with the Breather Bung Pack.
$10.99
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Rubber Stopper - #8 With Hole
#8 stopper - with 3/8 inch hole. 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).
$2.69
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Stopper - #12 With Hole
#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
$10.99
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Airlock - 3 Piece (XL)
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.
$3.49
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Expansion Stopper
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.
$2.49
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Stopper #5-1/2 | 5.5 - With Hole
#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.
$0.99
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Rubber Stopper - #2 Solid
#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).
$0.99
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CellarScience® Universal Breathable Bung | Plastic Carboys
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.
$8.79
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Rubber Stopper - #7.5 With Hole
#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).
$2.59
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Rubber Stopper - #10.5 With Hole
#10.5 stopper - with 3/8 inch hole. Top diameter 2.09 inches (53 mm), bottom diameter 1.78 inches (45 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).
$4.49
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Two Hole #6.5 Brewmaster Silicone Stopper
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!
$5.99
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Shatter Resistant Airlock - 3 Piece
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
$3.89
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Rubber Stopper - #5.5 With Hole
#5.5 stopper - with 3/8 inch hole. Top diameter 1.11 inches (28 mm), bottom diameter 0.95 inches (24 mm), length 1 inch (25mm). 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).
$1.39
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Locking Silicone Bung for Barrel
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".
$36.99
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Replacement Stopper for Counter Pressure Bottle Fillers
Stopper #2.5 with 3/8" Hole
$3.29
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Compact Airlock - 2 Piece| Smallest | For Fermentations up to 7 Gallons
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
$2.99
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Stopper #2 - Solid
#2 natural latex rubber stopper - solid. Top diameter 20 mm, bottom diameter 16 mm, length 25 mm. 67 stoppers per pound.
$0.79
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Rubber Stopper - #13 With Hole
#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).
$6.49
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$0.99
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Stopper #12 - Solid
#12 natural latex rubber stopper - solid. Top diameter 64 mm, bottom diameter 54 mm, length 25 mm. 6 stoppers per pound.
$7.99
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#8 Solid Rubber Stopper
#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).
$2.69
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Rubber Stopper - #8.5 Solid
#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).
$2.99
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Rubber Stopper - #7.5 Solid
#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).
$2.49
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Compact Airlock - 2 Piece | For Fermentations up to 13 Gallons
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
$2.79
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CellarScience® Silicone Bung | Solid | Glass Carboys
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!
$7.69
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