Cable heater 1,coil heater 2,Square section area: 3*3mm,3.5*3.5mm, ... area: 4*2mm, 4.2*2.2mm cable heaterCoil heaters also known as cable heaters can be formed to a variety of ... heaters where irregular size bores are found. A straight, round cable heater can snake through a sealing bar in packaging equipment installations ...