Prodcut Descrition:
1.The airlock grommet is made of thicker silicone and PBA free. It is high-temperature resistant. It can withstand Not over 300 ℉
2. It work with the airlock, it makes a perfect air-tight seal to keep bugs/bacteria/ oxygen from getting in your fermenter.That will help maintain the ferment for a longer period
3. External diameter is 5/8"(15.93mm). Internal diameter is 3/8"(9mm). Height is 0.3 inch(8mm). Need to drill a 5/8" hole in a fermenter lid. And then this airlock grommet is easily insert in lid hole
4. The fermenter grommets are great for airlocks & plastic buckets lids & straws.
Features：
1 - Any airlock fit into the grommet
2 - Made of super durable and long lasting silicone
3 - The silicone grommets will fit both metal and plastic lids
4 - These fermenter grommets made it easy to make an air tight hole for an air lock
5 - Use the airlock grommet to turn mason jars into drinking bottles
6 - Used these grommets to make my own airlock lids for fermenting
7 - Best to start with smaller hole and work up to the 5/8 inch hole to insert the airlock grommet
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