Nylon fuel line - is this required or can I use rubber tubing

[Andrew1601]

I am swapping the engine on my 2009 Xterra SE 6 cy 2WD auto. The fuel line that connected to the injection rail is rubber-coated stiff nylon. I need to replace this and re-attach it to the nipples. The stiff nylon is really hard to work with. Can I just use a heavy rubber tube and a c-clamp on the nipples instead? That seems to be the way it used to be done. Thanks for the help! See photo for the tube and fittings in question.
Andrew

 

[Prime]

No. You need petroleum resistant tubing. Lines that carry fuel, brake fluid, things of that nature have to be specifically rated for it.

 

[Andrew1601]

Ok. Can someone point me to how to attach the nylon fuel line tubing back onto the nipples? I am bit of a noobie and have not worked with this type of stiff tubing before. I understand there is some sort of tool but I am not sure where to look. Using a heat gun is not working it just slags the tubing.

 

[Andrew1601]

Alternately can I just join it to the nipples with a section of rubber tube with clamps on each side. The factory-installed fuel line was like surgically melted onto the nipples I don't think I can replicate that. I would use nylon tube for the line itself, and just join the nylon to the nipple connections via a clamped hose bridge.