When creating elastomeric composites, structures and products from them, in recent years, much attention is paid to environmental issues, as well as improving economic efficiency and energy efficiency in their production. During work in this area, a technology was developed for the preparation of nanodispersed fillers by the method of grinding feedstock to be used as reinforcing fillers in elastomeric composites. The best results from the viewpoint of reinforcing effect in elastomeric composites were obtained using shungite rock and rice husk products as a raw material. For specimens filled with nanodispersed schungite in combination with organosilane, a significant increase in stress is observed with a relative elongation and a significant (up to five times) increase in the strength of the elastomeric composite in comparison with a sample filled with the initial microdispersed schungite. The absolute value of the strength of such elastomeric composites is up to 22.5 MPa, which was achieved for the first time for elastomeric composites with this class of fillers. For a sample filled with products of processing of rice husks with a surface modifier, the average strength value was obtained at 18.5 MPa, which was also achieved for elastomeric composites with products of processing of rice husk as a filler for the first time.