N-oxydiethylene-2-benzothiazole sulphenamide (NOBS) dispersed in an inert (saturated main chain) rubber matrix (ethylene-co-propylene-diene monomer [EPDM], as carrier to be dispersed later in a predetermined lower quantities) containing definite amount of pre-dried aramid fiber pulp (AP) was subjected to internal thermal influence as heated through dielectric-dielectric interaction in a laboratory microwave oven. The reactions of NOBS with aramid fiber pulp (on the surface and in the bulk) were characterized using XPS, TGA, FTIR, SEM, and mechanical properties. The objective was to confirm the efficacy of dielectric heating in situ and to promote functionality for bonding with rubber.