HDPE Sheets (630) 833-0300 Email Us Clear All Forward Print How can we improve? 380 Products About Plastic More Raw Materials Moisture-Resistant Polyethylene (HDPE) Sheets, Bars, and Strips Practically nonHENAN OKAYorbent, HDPE won't swell when exposed to moisture. It is denser and more rigid than LDPE, plus it's more chemical resistant.