Results show that the scorch time and tya Increase with increasing concentration of palm oil fatty acid, while the MHR—ML (maximum torque— minimum torque) passes through a maximum value and decreases with acid concentration.Mechanical properties viz . tensile modulus, hardness, tensile strength and tear strength also follow the similar trend as MHR—ML, Reversion studies indicate that Incorporation of palm oil fatty acid improves the resistance to reversion of the natural rubber compounds.