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One-way airlock fermentation lid for glass jar


Included in this purchase is one fermentation airlock lid and supplied colors may vary depending on current stock. 

If you would like a particular color, please be sure to let us know/check with us for stock. 

Our one-way airlock fermentation lids are ideally suited to mason jars and are secured with a metal/stainless steel ring. This one-way airlock lid allows for carbon dioxide to escape while inhibiting oxygen from entering. This creates the ideal environment for fermentation, especially quick ferments such as veg mixes.

If you would like to order the airlock lid with a stainless steel band, view here.

The dimension of the one-way airlock fermentation lid is 82mm.


  • Please use an urban address where possible.
  • Live cultures are couriered out on Mondays & Tuesdays. 

One-way airlock fermentation lid for glass jar

One-way airlock fermentation lid for glass jar


Customer Reviews

Based on 13 reviews
Brian Robson

One-way airlock fermentation lid for glass jar

air lock

This was my first silicone airlock attempt. I really like it!

Michael Wemyss
Received but not used

Great service for delivery, haven’t used them yet

Adrienne Wright
Airlock lid for jar.

I’m very happy with this product.
It works well and is easy to clean.

matt deacon
good service

I haven't used my fermentation lid, but the customer service was outstanding.