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Airlock - Twin Bubble

Also called ripple airlock, the twin bubble airlock lets CO2 out while preventing oxygen, dust, bacteria, bugs, etc. from getting in your fermenter. Fill half-way with water or sanitizer and put it on the top of your fermenting bucket or...

Airlock - 3 Piece

This 3 piece airlock fits in any standard fermenting bucket lid or drilled stopper. Fill half-way with water or sanitizer. Can be taken apart so it's very easy to clean and can be turned into a blow-off system using 1/2"...

Brush for Airlocks - 5/8"

This small 5/8" diameter brush is perfect for scrubbing out your 3-piece airlock, hobby airlock, or other small narrow objects you may want to clean.

#3 Drilled Rubber Stopper (DRS)

Our #3 Drilled Rubber Stopper (DRS) is a pure laboratory stopper. The top diameter measures 15/16", the bottom diameter measures 3/4", and has a 3/8" hole drilled in the center, the perfect size for an airlock. This #3 rubber stopper is...

#2 Drilled Rubber Stopper (DRS)

Our #2 Drilled Rubber Stopper (DRS) has a top diameter of 13/16", a bottom diameter of 5/8", and it has a 3/8" hole drilled in the center, the perfect size for an airlock. This #2 rubber stopper fits standard beer bottles...

#6 Drilled Rubber Stopper (DRS)

Our #6 Drilled Rubber Stopper (DRS) is a pure white gum laboratory stopper. It has a top diameter of 1 1/8", a bottom diameter of 1 1/16", and has a 3/8" hole drilled in the center, perfect for a 3-piece airlock or ripple airlock. Great...

#10 Solid Rubber Stopper (SRS)

The #10 Solid Rubber Stopper (SRS) is a solid pure white gum laboratory stopper. The top diameter is 1 15/16" and the bottom diameter is 1 5/8". This stopper is solid and does not have a hole drilled in it....

#10.5 Solid Rubber Stopper (SRS)

The #10.5 Solid Rubber Stopper (SRS) is a pure white gum laboratory stopper. The top diameter is 2 1/16" and the bottom diameter is 1 3/4". It is solid, with no hole drilled in it, so it is perfect for...

Lid for 6.5 Gallon Buckets, with Rubber Grommet

This is the lid only for use with 6.5 gallon fermenting buckets or bottling buckets. It has a drilled hole with a rubber grommet for use with an airlock. The 6.5 gallon bucket is great for 5 gallon or smaller batches of beer,...

#5 Drilled Rubber Stopper (DRS)

Our #5 Drilled Rubber Stopper (DRS) is a pure lab stopper and has a top diameter of 1 1/16", a bottom diameter of 15/16", and a 3/8" hole drilled in the center, perfect for an airlock. The #5 rubber stopper is also available as a...

Universal Stopper Size #10 - Solid (SRS)

This solid universal stopper is a white rubber bung with a long taper for a snug fit and better seal. It also has a lip to prevent the bung from falling into the carboy. Fits Better Bottle carboys. 1 11/16" x...

#11 Drilled Rubber Stopper (DRS)

The #11 Drilled Rubber Stopper (DRS) is a pure white gum laboratory stopper. The top diameter is 2 1/4", the bottom diameter is 1 15/16", and it has a 3/8" hole drilled in the center, the perfect size for an airlock. This...

Universal Stopper Size #11-11.5 - Solid (SRS)

This solid universal demijohn stopper is a white rubber bung with a long taper for a snug fit and better seal. It also has a lip to prevent the bung from falling into the carboy. Fits 54L Demi-John. 1 7/8" x...

#12 Drilled Rubber Stopper (DRS)

The #12 Drilled Rubber Stopper (DRS) is a pure white gum laboratory stopper. The top diameter is 2.5625", the bottom diameter is 2.125", and it has a 3/8" hole drilled in the center, the perfect size for an airlock. The 12 rubber...

Universal Stopper Size #11-11.5 - Drilled (DRS)

This drilled universal demijohn stopper is a white rubber bung with a long taper for a snug fit and better seal. It also has a lip to prevent the bung from falling into the carboy. Fits 54L Demi-John. 1 7/8" x 2...

Universal Stopper Size #10 - Drilled (DRS)

This drilled universal stopper is a white rubber bung with a long taper for a snug fit and better seal. It also has a lip to prevent the bung from falling into the carboy. Fits Better Bottle carboys. 1 11/16" x 2...

#5.5 Drilled Rubber Stopper (DRS)

Our #5.5 Drilled Rubber Stopper (DRS) is a pure white gum laboratory stopper and has a top diameter of 1 1/8", bottom diameter of 1", and a 3/8" hole drilled in the middle, perfect for an airlock. This #5.5 drs is also...

#6.5 Drilled Rubber Stopper (DRS)

This #6.5 Drilled Rubber Stopper (DRS) has a top diameter of 1 3/8", bottom diameter of 1 1/8", and a 3/8" hole drilled in the center, perfect for an airlock. Our #6.5 rubber stopper fits most 3, 5, 6, and 6.5 gallon glass...

#10 Drilled Rubber Stopper (DRS)

The #10 Drilled Rubber Stopper (DRS) is a pure white gum laboratory stopper. The top diameter is 1 15/16", the bottom diameter is 1 5/8", and it has a 3/8" hole drilled in the center, the perfect size for an...

#8 Drilled Rubber Stopper (DRS)

This #8 Drilled Rubber Stopper (DRS) is a pure white gum laboratory stopper and has a top diameter of 1 5/8", a bottom diameter measuring 1 3/8", and it has a 3/8" hole drilled in the center, a perfect size for an airlock. This #8...

38mm Screw Cap with Hole for Gallon Jugs or Growlers

The 38mm screw cap with a hole is perfect for 1 gallon jugs and cubitainers. Designed for home brewers who like to make smaller batches. Plastic cap with molded hole to accommodate 3-Piece Airlock (Econo Lock) only.

#13 Drilled Rubber Stopper (DRS)

Our #13 Drilled Rubber Stopper (DRS) is a pure white gum laboratory stopper. The top diameter is 2 11/16", the bottom diameter is 2 5/16", and it has a 3/8" hole drilled in the center, the perfect size for an airlock. ...

#7 Drilled Rubber Stopper (DRS)

This #7 Drilled Rubber Stopper (DRS) has a diameter of 1 7/16", a bottom diameter of 1 3/16", and a 3/8" hole drilled in the center, a perfect size for an airlock. This #7 rubber stopper fits most 3, 5, 6, and 6.5 gallon glass carboys. It sits higher...

#9.5 Drilled Rubber Stopper (DRS)

Our #9.5 Drilled Rubber Stopper (DRS) is a pure white gum laboratory stopper that has a top diameter of 1 13/16", a bottom diameter of 1 1/2", and a 3/8" hole drilled in the center, the perfect size for an airlock. This stopper fits...

#8.5 Drilled Rubber Stopper (DRS)

This #8.5 Drilled Rubber Stopper (DRS) is a pure lab stopper with a top diameter of 1 11/16", a bottom diameter of 1 7/16", and containing a 3/8" hole drilled in the center, the perfect size for an airlock.

Lid for 2 Gallon Fermenting Bucket, with Rubber Grommet

This is the lid only for 2 gallon fermenting buckets. Has a hole with a rubber grommet in it for an airlock. The 2 gallon bucket is great for small batches of beer, wine, mead, kombucha, or sauerkraut, among other...

#7.5 Drilled Rubber Stopper (DRS)

This #7.5 Drilled Rubber Stopper (DRS) has a top diameter of 1 1/2", a bottom diameter of 1 1/4", and has a 3/8" hole drilled in the center, the perfect size for an airlock. The #7.5 rubber stopper fits most 1000 ml Erlenmeyer Flasks and is also available...