S-Shape Airlocks with #6.5 rubber stoppers. (pack of 3 airlocks with 3 matching stoppers)
Use this airlock and stopper in your fermenter to create a closed system that allows CO2 out and prevents harmful bacteria from getting in. Fill to the marked line with sanitizer or boiled water. Use with a drilled stopper. These stopper fit most gallon jugs and and 38mm screw cap jugs.
- S-Shape / Bubble Airlock
- #6.5 Stopper / Bung