Defrost hoses.

[swamp rat]

Originally Posted by cdowns

i used heat and they always went on an stayed in place// you could try a little bit of water on the plastic cause it will not leave a residue

There not the plastic ones there like a sticky tar paper similar to the originals.

[cdowns]

Originally Posted by swamp rat

There not the plastic ones there like a sticky tar paper similar to the originals.

heater box and dash vents are plastic

[volksworld]

I would try some black rtv silicone...slippery to install,and once it dries it will hold them on

[Avitech]

I would suggest using talcum powder (baby Powder) to get the hoses on. It will limit the stickiness, but not provide lasting lubrication. Just be careful the first time you blow air through the tubes because there will likely be a cloud of powder. I used this method for the silicone heater tubes in aircraft.