Collection: Rubber Stoppers & Silicone Bungs — Drilled & Solid for Homebrewing

We carry a wide variety of sizes and styles to fit all of your fermentation needs. Whether you're looking for a single stopper for your carboy or bung for your fermenting bucket, we have you covered.

Our stoppers and bungs are made from high-quality, food-grade silicone, ensuring that they won't impart any unwanted flavors or odors to your brew. They are also highly durable and resistant to extreme temperatures, making them perfect for use in both hot and cold fermentations.

At Howdy Brewer, we know that every brewer has their own unique needs, which is why we offer a wide range of sizes and styles. From solid stoppers to universal bungs, we have everything you need to keep your fermentations airtight and secure.

68 Products

  • #10 Rubber Stopper with 3/8" Drilled Hole | Fits Standard 3, 5, & 6 Gallon Glass Carboys #10 Rubber Stopper with 3/8" Drilled Hole | Fits Standard 3, 5, & 6 Gallon Glass Carboys
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  • Twin Bubble Airlock and #6.5 Stopper - Fermentation Set Twin Bubble Airlock and #6.5 Stopper - Fermentation Set
  • #7 Rubber Stopper for 5 & 6 Gallon Glass Carboys with Drilled Hole for Airlock #7 Rubber Stopper for 5 & 6 Gallon Glass Carboys with Drilled Hole for Airlock
  • #6 Rubber Stopper for 1 Gallon Jugs with Drilled Hole for Airlock #6 Rubber Stopper for 1 Gallon Jugs with Drilled Hole for Airlock
  • Universal Rubber Stopper - Size #6-7 (Solid)
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  • 5-Pack Three-Piece Airlock and #6.5 Stopper - Fermentation Set 5-Pack Three-Piece Airlock and #6.5 Stopper - Fermentation Set
  • #2 Rubber Stopper with Hole for Airlock - Fits Beer Bottles
  • 3-Piece Airlock and #10 Rubber Stopper Set for Brewing & Fermentation 3-Piece Airlock and #10 Rubber Stopper Set for Brewing & Fermentation
  • Carboy Bung (Silicone) - Solid Carboy Bung (Silicone) - Solid
  • Universal Rubber Stopper - Size #10 (With Hole) (3630445723728) Universal Rubber Stopper - Size #10 (With Hole) (3630445723728)
    Save 17%
  • Rubber Stopper - #11 Solid Rubber Stopper - #11 Solid
    Save 60%
  • 6.5 Rubber Stopper with Hole for Airlock fits 1 Gallon Glass Carboy Jugs 6.5 Rubber Stopper with Hole for Airlock fits 1 Gallon Glass Carboy Jugs
  • #8 Rubber Stopper with Hole - Fits 1000mL Flasks #8 Rubber Stopper with Hole - Fits 1000mL Flasks
  • Speidel Replacement Rubber Airlock Stopper for Speidel Plastic Fermenters Speidel Replacement Rubber Airlock Stopper for Speidel Plastic Fermenters
  • Solid Rubber Stopper for 1 Gallon Carboy Fermenting Jugs Solid Rubber Stopper for 1 Gallon Carboy Fermenting Jugs
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  • Universal Rubber Stopper #6 - #7 - Drilled with Airlock Hole
  • Carboy Blow Off Hood (Smooth Neck Carboy Cap) (3630445297744)
  • #9.5 Rubber Stopper with Airlock Hole - 2000mL Flask Fit #9.5 Rubber Stopper with Airlock Hole - 2000mL Flask Fit
  • Rubber Stopper - #000 Solid
    Save 82%
  • #6.5 Solid Rubber Stopper #6.5 Solid Rubber Stopper
    Save 86%
  • Rubber Stopper - #12 With Hole
  • Two Hole #10 Brewmaster Silicone Stopper
  • #3 Rubber Stopper with Hole for Airlock - Fits Beer Bottles
  • Rubber Stopper - #2 Solid
    Save 53%