Silicone Bung 19.5 x 28.5 /H32 Bored (Fits 4L Demijohns)

This bung is made from lead free curing silicone. Suitable for all food and beverage contact.  

Suited to fit the KL12850 - 4L Demijohn - Glass Bottle (1 gallon)

Silicone Bung 19.5 x 38.5 Bored for Airlock / Blow Off Tube

This bung is designed to be used with an Airlock - 3 Piece or Airlock - S shape 

Dimensions:
19.5mm tapered to 28.5mm