The dynamic mechanical properties of binary hybrids of chlorinated polyethylene (CPE) and acrylic rubber (ACM) with 3,9-bis(l, l-dimethyl-2 [beta-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionyloxy] ethyl)-2,4,8, 10-tetraoxaspiro [5,5] -undecane (AO-80) and their ternary hybrids were investigated. The addition of AO-80 was successful in tailoring the damping profile. The ACM/AO-80 hybrids show only one relaxation, which is larger than that of pure ACM, whereas for the CPE/AO-80 hybrids, one novel relaxation appears above the glass-transition temperature of CPE. In the case of CPE/AO-80/ACM, a supramolecular network was formed by a crosslink due to hydrogen bonding. The replacement of a part of CPE by ACM increased the value in the middle of two peaks. The AO-80 molecule, which is a bifunctional hydrogen-bonding acceptor, was found to act as a compatibilizer. In addition, in such ternary hybrids, the tan delta value in the middle of the two peaks was found to be proportional to the slope of the E' curve at an identical temperature.