I have just done a TFFV in a 60L plastic drum...
Have had it covered with tea towel for first 24 hours and now putting put lid on with air locks, locking ring and discovered it is not sealing....air locks are not bubbling. There is nothing wrong with the ferment as it is bubbling away nicely. The lid doesn't have an o-ring, just a plastic strip, similar to the inside of glass jar lids. Any ideas on how to seal properly?