Polyurethane Nylon MW-80C - JW 117742B CL-155 Insulation Characteristics: All the characteristics of polyurethane 130C plus the increased thermal rating to class 155C, solderable at 680F. Insulation Characteristics: Toroid coils, encapsulated coils, relays, clock and timer coils, solenoids, appliance motors. Part Number Code: _PNNEMA Standard (MW 1000): MW-80-C Federal Spec. (JW 1177B): JW 117742B CL-155 SPUN, SPUN2, SPUN3, SPUN4Military Spec. (MIL W 583C): None Available in Gauges 4-60Single or Heavy Build Insulation