Mica Mat 77869 is a film faced, glass cloth reinforced flexible, fully cured resin bonded mica paper tape designed for use as ground insulation of AC stator windings. It is 6 Mil thick with 2 Mil calcined mica paper for excellent long term electric properties. - 77869 excellent flexibility of the resin binder and the mechanical protection from the polyester film facing on both sides provide ease of winding and resistance to cracking from starting surges.