No need to worry about having to buy a new container or spilling liquid everywhere if you lose or damage your existing spout just print another and your good to go.
The main spout was printed with Ninja Flex - Semi flex (92A shore hardness).
The O ring was printed with a 60A flexible filament - or you can source a production O ring with a 35 mm ID and 41 OD mm (or there abouts).
The disc is designed to fit inside the cap just in case you have lost that as well
The attached spout file has 1 mm walls which I have found represents, good wear characteristics, great flexibility and beautiful printing characteristics.
Printing tip: Adjust Slicer parameters so that main spout is printed with 4 concentric circles.
Please note: While this thing depicts the use of this spout in a portable fuel container there are state and federal regulations which govern portable fuel container- This thing is unlikely to be compliant and is not recommended for this purpose. Also the polymer used may impart impurities into your fuel mix.
For more info www.flexwheelextruder.com
The flex wheel is a revolutionary new type of extruder mechanism which has completely moved away form the problematic hobbed gear pinch type roller system.
No more clogged hobbed gear, no more under extrusion problems, no more kinking of flexible filament, just more contact surface area transferring more power which drives your filament harder and faster.
For more info: