Miniature Firerod cartridge heater offers high watt densities and long service life making it well-suited for space-restricted applications in aviation, packaging, freeze protection, ink jet printer, and gas chromatography industries. Space-saving features include a 1/8-in. diam and an internal thermocouple option for temperature control. Sheath is resistant to corrosion and oxidation, even at high temperatures. Watlow Electric Mfg. Co., St. Louis, MO