TSR-CV is produced from high quality field latex. Rubber is viscosity stabilized at narrow money viscosity range. TSR-CV Rubbers are generally softer than conventional grades. Coupled with its constant viscosity feature, it provides a unique cost advantage in eliminating the premastication process and high reject rates, when used in open mill the rubber forms coherent band almost instantaneously thus increasing the milling through put. The non-scorch characteristics of the rubber will permit higher curing temperature to be adopted without risk of rejects.