Gasoline Tank adapter for Ford Focus 3 Trend 2011 (EU/FR).
Is the material conductive? If not, you can find yourself in a big trouble due gasoline flow generating a lot of static electricity. I would strongly reccomend against using this adapter.
I would not trust any 3d printed part with gasoline. It wouldn’t take much to gum up a fuel pump or fuel injector. I remember cleaning motorcycle carburetor parts with gasoline in plastic containers as a teenager. When left to soak overnight, everything would be one moulded blob in the morning and gasoline all over the floor.