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How to install the O-ring on the FerMonster™ PET Fermenter.

Part 1


Part 2


Part3

How To Install Spigot


How To Install O-Ring to Lid

Part 1


Part 2

FerMonster™ PET Fermenter


With a wider 4” mouth, there is easier access for cleaning. It is made of heavy P.E.T. plastic.
  • Our Carboys do not use any plasticizer and are made with 100% Virgin material. Made with Food grade materials and BPA free.
  • Comes with an O-ring and air-tight ONE PIECE lid with a hole that will take our #10 stopper. The lid hole is 4.3 cms (1.7”) in diameter.
  • There are no ribs, only smooth sides, so no yeast or sediment will adhere to walls during fermentation.
  • Solid lid is available as an option (not included in the product sold as a separate item) so you can customize your lid (drill as many holes as you wish).
  • Completely taste and odour-free. It is also stain resistant.
  • Impermeable to oxygen.
  • 100% made in Canada.
  • Comes with 5-Gallon, 6-Gallon and 7-Gallon easy-to-read markings on the side.
  • Also they are big enough so you can use them as your Primary Fermenter.

The FerMonster™ PET Fermenter is hard to carry, we strongly suggest that you purchase our carboy carrier (make sure it fits your specific size of carboy).


Four versions available:
  • FerMonster™ 6 Gallon PET Fermenter: Diameter 280 mm (11”), height 490 mm (19.2”) (including lid).
    * When filled to the base of the neck it accommodates 23.8 litres (6.3 US gallon)
  • FerMonster™ XL 7 Gallon PET Fermenter: Diameter 287 mm ( 11.3”), height 530 mm (20.9”) (including lid).
    * When filled to the base of the neck it accommodates 28.0 litres (7.4 US gallon)
    * Volume is measured to the base of the neck. With water at sea level and 20 C
  • FerMonster™ 1 Gallon PET Fermenter: Diameter 170 mm (6.7”), height 240 mm (9.5”).
    *When completely full the 1 Gallon can accommodate up to 4.1 Litre (1.08 US Gallon)
  • FerMonster™ 3 Gallon PET Fermenter: Diameter 230 mm (9”), height 372 mm ( 14.6”).
    *When completely full the 3 Gallon can accommodate up to 12 litre (3.2 US Gallon)



NOTE: This product comes packaged in a plastic bag- it is our hope that you re-use this bag to repackage the product after each use to protect it from dust. It is NOT our intention that they are a single-use bag.

Note: we do not sell our products directly.

If your local retailer does not carry our products, feel free to e-mail us so we can direct you to the nearest retailer.
If you are a retailer, please let your preferred wholesaler know about your needs.