According to various aspects disclosed herein, exemplary embodiments of an electric machine with direct winding heat exchange is disclosed, including a stator, a rotor, at least one coil positioned on a stator tooth of the stator, with the coil comprising one or more turns of a conductor and an insulator, where the insulator and coil form a monolithic body having at least one facet at an angle that corresponds to the geometry of a stator slot of the stator. In addition the exemplary electric machine can include at least one heat exchanger thermally coupled to the at least one coil, at least one non-conducting bulkhead, the non-conducting bulkhead comprising a body made of a polymer, the body including a first sealing surface and a tapered channel, the channel including a second sealing surface, where the first sealing surface is configured to provide electric and fluid isolation for a plate of the electric machine, the second sealing surface of the channel is configured to receive a distal end of the at least one heat exchanger and provide electric and fluid isolation for the heat exchanger.