Type SHE-Maximum Sheath Temperature 1200 degree F 1-1/2 inches wide, with Mounting Holes. CONSTRUCTION: Made with a seamless, stainless steel sheath into which is inserted a high-quality nickel chrome resistance wire, insulated from the sheath and supported on a refractory material packed with magnesium oxide powder. These materials have been selected for maximum heat transfer consistant with highest dielectric. Terminals are stainless steel and are securely anchored to prevent twisting out under normal conditions. With our flexible production methods, you may order special wattages to suit your needs. If two or more heaters are used, connections may easily be made to give three heats, or automatic regulation. Specify voltage when ordering.