Silicone Grommet and Bung for Glass Lids or Plastic Lids

Clear Silicone Grommets for fermenting with Airlocks inserted into a standard 3/8" center hole diameter which is the standard size for standard Fermentation Airlocks. 

Choose between the 1/16” grommet for plastic lids or the 3/16" grommet for glass lids.   Hole in plastic lid should be 9/16" (14.29 mms) and hole in glass lid should be 5/8" (15.88mms)

Silicone Bung Size 000 inserts into 3/8" Grommet centre hole (ie 9.525 mms)

Bung  measures 13mm top, 9mm bottom, 25mm length)

BPA free and USDA Food Grade compliant