Universal Fermentation Airlock

This instructable shows how to add an airlock to almost any hermetically sealed container.

The tools and materials needed:

An airlock

1/4" plastic tube

PG 13.5 mm cable glands

A step bit or a 1/2" knock our punch

3/4" rubber washers

Total cost of consumables for one mount < 5 dollars.

Use the step drill or the knockout punch to make a hole on the lid of your container.

The optimal hole size is one that the threaded end of the cable gland can barely fit through.

Pull the rubber gasket on the threaded end of the cable gland.

Insert the cable gland and tighten the nut with a wrench.

NOTE:

Silicone rubber is a better sealer then a normal rubber gasket but I didn't want to open a tube of silicone for this project. If you have silicone rubber at hand feel free to use it :)

Some airlocks may have edges left from the manufacturing process. You may have to sand them of to ensure an hermetic seal.

Try out the flexibility of this method :)

I only used 1/4" tubes here but if you use a bigger cable gland you can easily mount a 1" tube on your container.

Here is the video that I got the idea from (now these are some serious fermenters !!!!)

Have fun with your fermenting :)