Rubber seed oil was used as a multipurpose ingredient in natural rubber (NR
) and styrene butadiene rubber (SBR) compounds. The study shows that the oi
l, when substituted for conventional plasticiser, imparts excellent mechani
cal properties to NR and SBR vulcanizates. Further, it also improves aging
resistance, reduces cure time, increases abrasion resistance and flex resis
tance, and reduces blooming. (C) 1999 John Wiley & Sons, Inc.