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Contact SupplierA specific, Nichrome or Kanthal ribbon wire is wound on specially selected Mica Strip, providing even heat distribution for maximum Heater life. Mica of 1mm thickness is used to insulate the windings, providing excellent dielectric strength and thermal conductivity for efficient heat flow. Plus Mica withstands high voltage spikes, resists moisture and is inert to most chemicals. The element is then enclosed in either a Stainless steel or a specially treated rust resistant electro plated steel sheath to provide high emissivity and good thermal conductivity for sheath temperatures up to 300°C. (For sheath temperatures up to 550°C a stainless steel sheath is available).