Recently efforts have been made to obtain active polymer‐elektrically conductive particle composites the conductivity of which would be strongly dependent on external thermodynamic parameters – pressure, temperature, and other. New interesting properties are expected in case the polymer composite contains dispersed nano‐size conducting particles. The present study is focused on examining electrical resistance vs tensile strain and pressure of polyisoprene‐corbon nanocomposites near the percolation threshold to find the best composition for sensor applications.