DIAH DO IT AT HOME Fermentatie luchtsluis en verveelde rubberen bung kurkstop voor glas Demijohn bierwijn maken (12 x luchtsluizen [2-kamers] + bungs)

If you are needing air-locks for your Demi-johns or fermentation vessels these are good value. Plastic construction appears durable and fit snugly into the bungs. Can be used with or without the supplied caps. Cleaning is simple, especially if you use a little sanitiser in the bubbler whilst in use, just rinse through with fresh water and spray with sanitiser. A functional item that can make or break your brew if not airtight, these are airtight and should last years with a little care.

Very good. Not much else to say.Theyre reliable and fit good. Easy to use and they don't react or melt like the white silicone bungs. These are decent

airlocks worked perfectlythe bungs are not a good material, slides out of any bottle I've tried. I trimmed the bung down to try give it a better profile to match the bottle, but it still slides out.

Fairly priced, good quality, protects your brew

The bugs don’t stay in the demijohn unless I hold them down. Even then air bubbles are coining out of the bung.