1.UL 3323 Silicone Heating wire 2.UL & RoHS 3.Above 200deg C 4. ... Widely used in medical electronic apparatus,heating machine. UL 3323 Silicone Heating Wire Style 3323Insulated Wire Rating200 deg C, 300 Vac ... wound glass fiber separator over conductor, and/or silicone rubber coating over core. InsulationSR - SILICONE, 22 mils min average, 20 mils minimum ...