Sounds like you are planning on making a filler funnel for your truck. Nothing is resistant to DEF. They all crystalize on whatever they come into contact with. Probably the most effective thing would be to 3d print your filler funnel. Sand it, filler prime it, sand it, filler prime it etc... Then m...
And with Covid, more 3d printers were sold than ever before. To be silent during that period, would have been a death nail, if they weren't already dead. Even if someone bought them to try to bring it out of the ground, its too late. The ship has sailed.
Pretty sure that they are basically out of business, and probably down to one or two people eeking out a meager living off the few people who are new to 3d printing and sending in some $ for a license, not knowing that it is actually dead. I guess I too, will start the migration over to superslicer....