Rubber bung for carboy PET 12/23 l, with hole 9 mm

These conical bungs are perfect for larger 12/23 fermentation vessels such as the Fermonster. Conical bungs are designed to have a longer life than you standard rubber cap as they wear out much slower.

Dimensions:

Diameter of Top: 52mm
Diameter of Bottom: 43mm
Height: 28mm
Hole Width: 9mm