M22759/28 wires have extruded PTFE insulation with a polyimide hard coat for increased cut-through and abrasion resistance. These wires are designed for aerospace and other applications requiring excellent thermal stability, tight dimensional tolerances, and high reliability. These wires are especially well-suited in applications where smoke emission, overload stability, and flammability are major concerns. For versions of these wires with high-strength copper alloy conductor, see M22759/30 and /31.