Polyurethane Constantan® Thermocouple Insulated Wire is a Goodfellow range of insulated wire that contains 30 variations. The wire consists of a Constantan alloy conductor insulated with polyurethane. Constantan is an alloy of copper and nickel known for its low temperature coefficient of resistance. The polyurethane insulation provides electrical isolation and protection from abrasion. This versatile wire finds uses in strain gauges, thermocouples, and other precision instrumentation where stability and consistency are critical. With Goodfellow's wide selection, scientists and engineers can choose the gauge, insulation thickness, and spool size needed for their specific application.