Blends of maleated EPDM and maleated HDPE (abbreviated mEPDM and mHDPE) in compositions ranging from 90/10 to 50/50, parts by weight, were prepared. The blends behave as a good adhesive for aluminum-aluminum bonding. The 50/50 blend of mEPDM and mHDPE shows a higher peel strength than the corresponding EPDM/HDPE blend. The incorporation of zinc oxide in the mEPDM/mHDPE blend increases the peel strength further, which also depends on the molding time and temperature.