I liked the watering bottle cap from @3dprintnovesia (https://www.printables.com/de/model/151956-watering-bottle-cap), but unfortunately it leaked out of the thread, so i fxed it. I just added a chamfered ring to seal the top of the bottle. It worked pretty well and have this thing now with me on every longer hike and camping tour.
I used the same print parameters as the original.
You can use “Duschkopf V3 Revised” as is. It could be possible that the ring is inserted too deep into the thread. If so, simply Import the “Ring Only” to the original STL and place it by hand. Fairly easy.
The author marked this model as their own original creation.