Abstract: This invention relates to preparation of nanocomposites comprised of elastomer and a dispersion therein of an at least partially exfoliated, intercalated, multilayered, water swellable clay (e.g. smectite clay). The invention further relates to rubber compositions comprised of such nanocomposite, articles of manufacture, such as for example tires and industrial products such as, for example conveyor belts, power transmission belts and hoses, which contain at least one component comprised of said nanocomposite or said rubber composition. A particular adaptation for such rubber composition is contemplated for rubber tire components, such as for example treads, where significant replacement of carbon black reinforcement may be desired to reduce heat buildup for tire durability and reduction in tire weight for vehicular fuel economy such as, for example, aircraft tire treads.