Abstract: A heating device comprises an thermally conductive tubular body with a thermally conductive end closure disposed at an axial end of the tubular body, an electrical resistance heating coil disposed in the tubular body and having an end spaced axially from the end closure, and a thermocouple disposed between the end of the heating element and the end closure. An outer tubular casing is disposed about the tubular body with an outer end cap disposed at an axial end of the tubular casing in contact with the end closure to receive heat therefrom by thermal conduction.

Abstract: A nozzle body of stainless steel surrounded by a single layer of turns of a strip electrical heater interconnects a die caster and a sprue of a cluster of casting cavities in a die casting apparatus. The heating element is surrounded by a protective tube and the ends of the gap between the protective tube and the nozzle body are closed by annular members.