Heaters & Thermocouples Jai Laxmi Tool & Components supplies different models of electric resistances for heating the extrusion heads and its components. The models of the electric heaters can be: Band with mica or ceramic insulation; Flat with mica or ceramic insulation; Cartridge Photo Gallery JAI LAXMI TOOL & COMPONENTS OFFERS AFTERMARKET HEATERS & THERMOCOUPLES FOR ALL OEM EXTRUDERS.