Short fibers attracted the attention of several researchers due to their good dispersion as well as their advantages on the physico-mechanical and dielectric properties. This work represents a systematic study on the electrical and physico-mechanical properties of styrene-butadiene rubber (SBR) reinforced with polyester short fibers. Next, we point out the influence of the adhesion system HRH (hydrated silica, resorcinol, and hexamethylene-tetramine), the fiber concentration, and aging on these properties of the investigated samples.