3/8" Black HDPE 24" x 48". Add to Wish List. . 51983104. HDPE (High Density Polyethylene) has a ntinuous use temperature range of -50°F (-46°C) to 180°F (82°C). It is a standard material and offers high impact strength, high chemical resistance, and very low water HENAN OKAYorption. HDPE offers strength and rigidity for many applications