- Contains 1 x Air Lock Grommet And 1 x Blanking Grommet
- Fits Balliihoo And Vinclasse Fermenting Buckets As Well As Plastic Demijohns Which Have A 13mm Hole. As These Are Soft Rubber, The Inner Hole, While Initially Smaller, Will Stretch To Give An Airtight Seal To Airlocks With A Diameter Of Between 9mm to 10.5mm.
- If You Are Adapting A Plastic Vessel To Accept An Airlock, You Will Require A Precise 13mm Hole And The Wall Thickness Must Not Be More Than 2mm
- Not Suitable For Glass Bottles Or Glass Demijohns, For These See Our Range Of Rubber And Cork Bungs
A simple accessory that plays its part in the production of a perfect wine or brew, by providing an airtight seal with an airlock or simply capped off with no airlock, it can double as a pressure release cap avoiding partial unsealing or removal of the vessel lid thus preventing the risk of drawing in of Airbourne Bacteria.
There is now a hole punch available for putting an airlock Grommet in the lid and a drill bit for adding a tap.