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.
$2.79
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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.
$1.69
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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).
$1.99
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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).
$1.59
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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).
$3.79
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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.
$1.69
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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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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).
$1.99
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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.
$6.59 $3.99
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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).
$4.89
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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).
$3.79
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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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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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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 - #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).
$3.19
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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!
$5.49
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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