Watt-Flex has an outer groove to accommodate a movable needle-type thermocouple for accurate sensing and control in temperature-critical processing applications up to 1,700°F (927°C). The continuous-coil design produces a uniform temperature along the heater sheath, which contracts to ease removal from bores and sleeves when the heater is de-energized. The split-sheath cartridge heaters are offered in 14 standard diameters and lengths from 1.25 to 72".

Dalton Electric Heating Co. Inc., (978) 356-9844