Dynamic viscoelastic properties and dynamic mechanical properties of blends of acrylate rubber (ACM), fluoroelastomer and polyacrylate plastics have been investigated with a rheometer (ARES RDA III) at a frequency (omega) range of 0.1 to 100 rad.s(-1). The analysis of thermorheological properties revealed that the dynamic moduli and dynamic viscosity of blends varied with the composition of the ACM/FKM blend and the level and type of polyfunctional acrylates. The blends showed negative deviation of the dynamic viscosity additive rule. Higher polyfunctional acrylates induced phase separations and showed temperature dependency. It was found that the data of the blends did not follow the Cole-Cole plot of miscibility and the plot of log G'-log G" of the blend showed composition dependency. The dynamic mechanical analysis exhibited lower tan delta values for blends containing higher functional acrylates. Stress relaxation measurements showed longer periods of relaxation for all blends.