The Expandable Heaters are manufactured with an
internal compacting system of all its components in order
to increase their lifetime. The Nickel/Chrome 80/20
conductor wire is introduced into the cavities of a ceramic
core which focuses the suitable separation in order to
obtain a better isolation. Fully coated with magnesium
oxide of high purity grain sized controlled to ensure the
complete cartridge Expan filled. Later a compacting
process and surface rectification until calibrated the
desired size. Finally, a rigorous quality control that
guarantees the best performance of the cartridge.