MIL-W-16878/4 Type E NEMA HP-3 is a military specification hook-up wire for harsh environments. M16878/4 includes plated conductors and insulation made of polytetrafluoroethylene (PTFE). is resistant to thermal aging, solder iron damage, open flames, moisture, solvents, grease, ozone and other chemicals. It has a wide operating temperature range of -60°C to 200°C. M16878/4 wire is capable of handling voltages up to 600 V.