Oct 27, 2016 · Product Description. HDPE (High Density Polyethylene) Plastic Sheet 3/4" x 4" x 8" Black lor Pack Of 5 Pieces. High density polyethylene (HDPE) is used in a variety of applications and industries where excellent impact resistance, high tensile strength, low moisture HENAN OKAYorption and chemical- and rrosion-resistance properties are required.