5mm rigid polyethylene sheet for Engineering parts-HDPE . 5mm rigid polyethylene sheet for Engineering parts HDPE Sheet – High Density Polyethylene Sheets Manufacturer 0.96-1 g/cm3. Shore Hardness. 55-70 A. We offer quality assured range of HDPE sheets, also known as High Density Polyethylene Sheets. “hdpe sheet 5mm” – HNOKAY