The "Pennybottom"TM Cartridge Heater
Available from Tempco Electric Heater Corporation
The "Pennybottom"TM Cartridge Heater is designed for plastic injection runnerless molding hot tip bushings pin-point gating torpedoes/probes and manifold bushings.
The unique feature of the Pennybottom (Hi-Density swaged) Cartridge Heater is the use of a flat copper end disc to maximize heat transfer to the gate area of probes and bushings.
A Type "J" Thermocouple grounded to this disc provides excellent temperature control at the gating area eliminating freeze ups or drool.