HNBR (hydrogenated nitrile butadiene rubber) is a high performance elastomer, known for its excellent heat/oil resistance and superior mechanical properties. However, it is also an elastomer with relatively high Mooney viscosity (ML 1+4, 100 degrees C > 55), due to the limitation of its feedstock NBR's finishing process. This paper discusses a novel approach to improve the processibility of HNBR while equal physical properties and aging resistance are retained. The HNBR rubber compound based on this new approach can be mixed in a shorter time, (faster black incorporation time BIT), have a much improved flow which yield to faster mould filling and shorter cycle time in injection moulding process.