Polyimide Tape Duplex 500F(260C) Solid or stranded thermocouple wire perASTM E230 & ANSI MC96.1 Flame retardant extruded fluoropolymer FEP Conforms to ASTM E230 and ANSI MC96.1 (International Color Codes Available) Parallel conductors Stainless Steel Two layers of fused polyimide tape