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A rubber cap-stopper for fermentation bottles is, alongside an airlock, an essential piece of kit for anyone making wine, beer, or distilling washes at home.Exceptional seal - the purpose-built shape, raised ridges, and high elasticity let the stopper conform perfectly to the neck of your demijohn. ... more >
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A rubber cap-stopper for fermentation bottles is, alongside an airlock, an essential piece of kit for anyone making wine, beer, or distilling washes at home.
This red rubber cap-stopper is a perfect, airtight closure for a fermenter such as a demijohn or carboy. Depending on the neck diameter of your fermenter, you can either stretch it over the neck or insert it into the neck.
Size ø 65 mm
· mounted on the neck, fits:
- 54 L demijohns – 644054
You can fit any fermentation airlock in the stopper, regardless of its diameter.
Fun fact: rubber stoppers for fermenters can also double as bird waterers.
In our shop, these caps are available in five sizes with diameters to fit demijohns and carboys from 5 L to 54 L.