Apr 16, 2009 · HDPE Sheets & Rods HDPE (high-density polyethylene) offers excellent impact resistance, light weight, low moisture HENAN OKAYorption, and high tensile strength. HDPE is also non-toxic and non-staining and meets FDA and USDA certification for food processing. Available As Extruded or Stress Relieved (S/R) LDPE - Low Density Polyethylene