Material for 95HX fuel filler neck?

[burtshaver2021]

Does anyone know what material the black plastic duel filler neck is made of on the 95 HX? From the research I’ve done I’m thinking it’s polypropylene. Polypropylene is apparently fairly ridgid unlike the polyethylene fuel tank. from what I read polypropylene is very resistant to fuel and oil as well so seems like a good possibility but would like someone else opinion. The fuel filler neck on my HX is cracked and I would like to repair it. Any advice on plastic welding with polypropylene would be appreciated as well. Thank you

 

[burtshaver2021]

I had myself convinced that the filler neck would be made of polypropylene but once I got the neck off I found a marking POM which is polyoxymethylene. I had received my supper cheap weldin iron that came with abs, polycarbonate,nylon, polyurethane TPO,TEO,TPE , and polypropylene rods but no polyoxymethylene rods. I’m going to do a little research and see if it can be welded with any other material, if not I may just try melting this neck back together but if I have to I see that polyoxymethylene rods are available. I may also have a quick look around and see if I can find some POM laying around

 

[burtshaver2021]

AfterAfterbeforeand before, I used the the triangle head on the iron to smooth around, used the edge of the triangle iron to stitch into the plastic like you would with a flat blade, and then smooth it over. Took about 8 go arounds of testing with pressure and soapy water and still couldn’t get it to no bubbles at all until I used the pointy end on the iron and melted the inside of the neck on the visible cracks.