Bungs and Grommets

  1. Black Grommet for airlock hole in fermenters Black Grommet for airlock hole in fermenters
    $2.00

    Black Grommet for airlock hole in fermenters

    A "doughnut" shaped black grommet for the standard airlock hole in plastic fermenters. Compatible with both Senior and Vintage airlock type. Has a centre groove which allows it to clip into the fermenter lid, making it more resistant to being pushed out if pressure builds up during fermentation.
  2. Bored Bung 19mm (Barrel)
    $7.20

    Bored Bung 19mm (Barrel)

    Bored Bung 19mm (Barrel) (19mm to 27mm) - red rubber with an airlock hole.

    The given dimension in the title is the the diameter across on the smaller side. Fits a vessel with 19-23mm opening.
  3. Bored Bung 25mm (P1)
    $4.10

    Bored Bung 25mm (P1)

    Bored Bung 25mm (P1) - red rubber with an airlock hole.

    The given dimension is the the diameter across on the smaller side. Fits a vessel with a 24-27mm opening.
  4. Bored Bung 30mm (PB)
    $4.50

    Bored Bung 30mm (PB)

    Bored Bung 30mm (PB) - red rubber with an airlock hole.

    The given dimension is the the diameter across on the smaller side. Fits a 23l glass demijohn for a tight seal.
  5. Demijohn Bored Bung 28-30mm
    $3.80

    Demijohn Bored Bung 28-30mm

    Demijohn Bored Bung 28-30mm - white rubber with an airlock hole.

    Fits perfectly a 5l glass demijohn for a tight seal. Used usually for winemaking & small batch brewing.
  6. Demijohn Solid Bung 28mm-30mm (23L Jar) (28mm to 32mm)
    $3.00

    Demijohn Solid Bung 28mm-30mm (23L Jar) (28mm to 32mm)

    Demijohn Solid Bung 28mm-30mm (23L Jar) (28mm to 32mm)
  7. Rubber stopper / bored bung. #10 w/airlock hole (for plastic carboy) Rubber stopper / bored bung. #10 w/airlock hole (for plastic carboy)
    $5.50

    Rubber stopper / bored bung. #10 w/airlock hole (for plastic carboy)

    Rubber stopper / bored bung #10 with airlock hole.

    Fits our 11.5l & 23l plastic foodgrade PET carboys perfectly.
    #10 size is a standard bung size, in this case 41mm diameter across on the small side, going to 51mm on the wider side.
  8. Thermometer Bung 22mm. Black (22mm to 28mm)
    $6.40

    Thermometer Bung 22mm. Black (22mm to 28mm)

    Thermometer Bung 22mm. Black (22mm to 28mm). This bung has a smaller diameter bore than a standard bored bung, which makes it suitable for mounting a 30cm Glass Thermometer (available separately).
  9. Tophat Grommet
    $2.70

    Tophat Grommet

    The top-hat or T-shaped grommet is a popular choice for use with an airlock in a fermenter lid. Tophat grommets are more robust than the black doughnut shape alternatives which can become damaged, however they are more easily popped out if there is excessive pressure build up in your fermentation vessel due to a blocked airlock.