Helical Quartz Heater (insulating sheath): Tube outer diameter: 11.5-12 mm. Tube inner diameter: 7.5 mm. Helical inner diameter: 95 mm. Helical -outer diameter: 118 mm. Helical height: 82 mm. Heat resistance: 1500Co. Total number of rings in one helical:6 tube pitch ie. no air gab between rings: 0
Helical Quartz Heater (insulating sheath):