The adhesion phenomena of the interfaces between metal plates (Ni, Cr, Brass) and a rubber(polyisobutylene-co-isoprene), containing sulfur as a vulcanizer, was investigated in this work. The effect of sulfur on the interfacial phenomena was examined by measuring the adhesion forces. No effect on Cr-plate was observed. In the case of Ni and Brass plates, there are some differences in reactivity. The adhesive energy, Ga, was calculated from the results of 180°peel test, and the adhesive energy was found to be dependent on the reactivity of sulfur and metals and the viscoelastic property of the rubber. When the chemical bond across the interfaces was estabilished, cohesive failure was observed and the mechanical property of the corroded layer seemed to play an important role in adhesion. It was also found that the adhesive energy of the metal/rubber interfaces showed about one order lower than the tear energy of the pure rubber.