Fermentation Grommets Pack of 12. Food Grade BPA-Free White Silicone Rubber Complete with 12 Stoppers. Best for Airlocks, Fermenting in Jars and Buckets. 3/8" Center for 1/2" Hole

These are super. I used a size 10 drill bit to drill holes in three old sweetie jar lids. Fitted the grommets and now I have three large food fermenting jars. Pleased that these grommets (and extremely useful bungs) are food grade. Being a feeble female it did take a bit of huff and puff to force the grommets into the hole, but that’s ok...created a good tight seal.

Arrived in good order, as shown on the website, now in operation.

Era quello che cercavo, e l'ho trovato.

Come da descrizione.