Also, the mixing sequence was kept constant for all of the mixes. The curing characteristics such as, scorch time (ts2), cure time (tc90) and maximum torque (MH) of filler-filled natural rubber compounds were determined by Monsanto Moving Die Rheometer (model MDR 2000) according to ISO 3417 at 150 C, followed by, compression moulded at 150 C according to their respective tc90 values. Moulded sheets were conditioned in desiccators for 24-h prior to further testing.