Vulcanize

To cure by chemical reaction that induces extensive changes in the physical properties of a rubber or plastic, brought about by reacting it with sulfur and/or other suitable agents. Changes include decreased plastic flow, reduced surface tackiness, increased elasticity, much greater tensile strength and considerably less solubility: the process being hastened by heat and pressure: the method of curing thermosetting materials – rubbers, XLP, etc. See Rubber Insu­lation.