Coaxial is the classification given by MDC to all ISI™ feedthrough geometries containing two concentric conductors - one outer metal tube or shield conductor concentric with, and enclosing, a cylindrical center conductor. The inner and outer conductors are separated and insulated by an alumina ceramic dielectric. ISI™ Coaxial Feedthroughs are offered in conventional Grounded or Floating Shield configurations. They are also available in Single or Double Ended geometries and in most cases supplied with industry standard air-side, Coaxial Connectors.