A rotary hinge assembly includes a hinge housing including at least one interior chamber. A spring disposed within the hinge housing provides a torque on an attached door while in an opened and closed position. A rotor rotatably disposed within the at least one interior chamber includes at least one rotor vane that moves in relation to a stationarily mounted stator having at least one stator vane. A fill plug includes a plurality of entrance and exit holes disposed in relation to the stator and rotor vanes to define a fluidic damper assembly. A valve disposed within the fill plug permits selective adjustment of the fluidic damper by restricting or opening the entrance and exit holes of the fill plug.