Northeast Flex Heaters Inc. is a thermal solutions manufacturing company. NeF. manufactures Transparent Heaters, Silicone Wire Wound Heaters, Kapton/Polyimide and Silicone Etched Heaters. We will make your heaters in the shape of flat, spiral wrap, blanket, and molded to shape. NeF heaters are used in Aerospace, Military, Medical, HVAC, Automotive, Office Automation and Telecommunications.