In this study the epoxidized natural rubber (ENR) and organoclay (Cloisite 20A) composites were prepared by solution mixing process. The obtained nanocomposites were incorporated in natural rubber (NR) and styrene butadiene rubber (SBR) blends in presence of varying types of carbon black as reinforcing fillers. Morphology, curing characteristics, mechanical and thermal properties were characterized and analyzed. Also, the wear characteristics of the nanocomposites against Du-Pont and DIN abrader were determined and discussed. The morphology of the organoclay incorporated in ENR shows a highly intercalated structure. ISAF type of carbon black shows a significant effect on curing and mechanical properties by reacting at the interface between SBR and NR matrix. Blends containing ISAF N234 type of carbon black shows high abrasion resistant properties against Du-Pont and DIN abrader.