Thickness 5 to 20mm high-impact strength pe 300 polyethylene 15mm pe 300 sheets for HDPEp-HDPE 4×8 polyethylene sheet for sale High-Strength Slippery UHMWPolyethylene Sheets and Bars. mpared to our standard UHMW polyethylene, these sheets and bars hold up better to scuffs and scrapes in high- speed, high- precision, and high-impact applications