In order to explore the possibilities of more and more commercial utilization of rubber seed oil, sulphur factice was prepared from crude rubber seed oil as well as blown rubber seed oil. Different proportions of sulphur was used and different temperatures were employed. Diethanolamine or M.B.T was tried as catalysts. With crude rubber seed oil 15-20 parts of sulphur may be employed, while for blown oil 15 parts was found to be suitable. In prescence of diethanol amine a higher temperature may be preferred and a product with comparatively low free sulphur could be obtained. 5 phr and 10 phr of a typical product was incorporated in to a tread typemix and the effect of factice loading in the cure characteristics and physical properties of the vulcanizates were evaluated. The properties were comparable to those of a commercial factice. The ageing characteristics of the vulcanizates were considerably improved by factice incorporation.