In this work, black nanocarbon-loaded 0–100 parts-per-hundred (phr) PbO-filled acrylonitrile butadiene rubber (NBR)/styrene-butadiene (SBR) blend composites were prepared by using an ordinary standard mixer. Both mechanical and gamma attenuation properties of the samples investigated. Maximum tensile strength elongation at break obtained 40 phr PbO concentration. The values for mass coefficient...