Salutations CheeseSandwich,
Plumber tape acquired at Canadian Tire stores. Now, guess what i've done!...
(Walmart - Sunbeam SU1400-CN Ultrasonic Humidifier)
It turns out 105 mm (4 1/8 in.) corresponds exactly to the diameter of a 2 liters soft-dring bottle if one knows where to cut:
Which proved to be convenient in such a case!
There's a small fan inside the nebulizer creating positive pressure, as a result it was necessary to prevent fog from reaching my HA while in standby - otherwise i'm afraid my herb would get moisturized before it's even vaporized! So, plugging my nebulizer tube to a bended ("J") one that's immersed under water, inside a bottle (working also as a mixing chamber), happens to work just fine: when i begin to inhale there's fog comming up the nebulizer's internal vertical column and it eventually enters the bottle, making bubble noise in the process... Tubing is 5/16 " (I.D.) 7/16 " (O.D.).