An　elastic　abrasive　of　the　new　type　having　the　advantage　of　effectively　controlled　contact　pressure　and　uniform　deformation　was　developed.　It　provides　complete　lamination　of　the　surface,　effective　treatment　of　the　curved　mold　cavity,　as　well　as　improves　the　processing　efficiency.　It　permits　of　fine　cavity　surface　finishing.　These　soft　elastic　abrasive　composites　are　based　on　silicone　as　the　matrix　material　and　modified　SiC　microparticles　as　the　reinforcing　element.　Mechanics　and　contact　deformation　behavior　of　the　abrasives　were　studied　by　examining　sizes　of　reinforcing　particles　and　their　content　(53.5,　59.3,　and　65.4%).　Mechanical　compression　behavior　of　the　composite　is　characterized　by　the　concave　power　function　index.　Contact　deformation　analysis　shows　that　the　network　connectivity　produced　by　cross-linking　of　silicone　and　a　curing　agent　propagates　through　the　void　spaces　of　the　crystal　lattice　of　abrasive　particles　on　pressure　application.　Elastic　extension　and　compression　of　composite　net　chains　guarantee　the　complete　lamination　of　the　processed　surface,　and　hard　abrasive　particles　introduced　into　the　net　chain　spacing　complement　the　structure　of　the　material.　©　2018,　Springer　Science+Business　Media,　LLC,　part　of　Springer　Nature.