- Solid Cork Bung

simply snap off the tamper evident ring and screw the cap on tightly

The bubbler airlocks fit in the grommets creating an airtight seal

which makes them easier to store

creating a seal

Plastic 1 Litre PET Clear Bottles & Caps - 24 Pack wine making equipment - Solid Cork BungA case of 24 one litre clear PET plastic bottles, with 24 caps. Each 1 litre bottle is designed to withstand pressure. These are typically used to make sparkling Elderflower fizz or homemade sparkling cider, any homebrew drink in fact that creates pressure inside the bottle. PET bottles are ideal for this because, as the pressure inside the bottle builds, the plastic becomes tight. You can then 'burp' each bottle occasionally and reseal, to avoid