FerMonsterPET Plastic 6 Gallon Carboy with Lid for Homebrew Beer Making

I really like these and shipment was quick. However, I can't give them 5 stars. Ordered 3 and only 1 had an airtight seal. The gasket on the other 2 was a bit too big and I couldn't get them to be airtight without some modification.If not for the seal issue, they would be 5 stars.

Great primary fermenter but needs a redesign bc the O-ring does stretch, and the bung I had to duct tape to prevent air leakage.

Great fermentation vessel indeed. Only issue I've came across was that if you soak the ring that goes into the lip of the lid in hot water it stretches and you no longer are able to use that part anymore. Maybe you can apply some sort of heat to shrink it back but may risk melting it. Sucks that there aren't any replacements for this or that the lids are sold separately so you may be forced to replace the entire product. Reached out to the manufacturer and sellers but no reply.Other than that the wide mouth makes cleaning, transferring and dumping a breeze.