UHMW (Ultra High Molecular Weight Polyethylene) Sheet, Opaque White, Standard Tolerance, ASTM D4020, 3/4" Thickness, 12" Width, 24" Length Brand: Small Parts 13 ratings $57 99 UHMW is an impact-, chemical-, and moisture-resistant plastic with a low-friction surface, better abrasion resistance than PTFE, and more rigidity than other polyethylenes