Explore high-purity 0.5mm Type J (Iron-Constantan) thermocouple wire designed specifically for plastic injection molding nozzles, hot runners, and extrusion barrels. Exceptional thermoelectric stability and extended service life. Product Overview Maintaining tight thermal windows in plastic injection molding requires sensor conductors that resist drift under continuous thermal cycling and mechanical vibration. Our 0.5mm Type J Thermocouple Wire is manufactured through vacuum