Type 55®. Type 55® wire is insulated with modified radiation cross-linked ETFE polymer. The dual wall Airframe construction of type 55® wire is used on numerous aircraft programmes. Also for industrial applications where high temperature rating is required. Dual wall has a 0.25mm total wall thickness & a contrasting core colour (blue) to act as a damage indicator. Features & Benefits ; Single or dual wall construction ; Small size, ultra lightweight ; Mechanically rugged ; Exceptional resistance to most chemicals & electrical arc tracking ; Excellent shop handling, scrape abrasion & flexibility ; Not susceptible to UV & moisture degradation ; High quality scrape abrasion ; Cut through characteristics. Applications:. ; Commercial wiring ; Avionics ; Satellites ; Aircraft ; Helicopters ; High performance military systems