I looked at the Vesconite Hi Lube material due to the fact that when I was still working I was in the high end engineering plastics business. The Vesconite appeared to be a good product but for me I think the PEEK FC30 grade of engineering plastics would have been even better due to its inherent strength and dry lubrication properties which is neither affected by hydrocarbons or moisture. Also its easy to machine, unfortunately its expensive stuff.
