Apr 23, 2005 · Everyday Low Price. $86.99. 11% Mail-In Rebate Good Through 3/19/23. $9.57. HDPE Sheets Cut to Size Buy Online at OKAY Plastics HDPE sheet is used for applications that require greater strength and stiffness than LDPE (low density polyethylene). It is easy to weld using thermoplastic welding equipment. mmon appli