... with high-density, high use temperature, superior oxidation resistance, low corrocorros Specifications1. sic rod , 2. Diameter, 8-40mm,Equal dia. double ... air pollution. DescriptionsOD: Outer Diameter,HZ: Length Of Hot Zone,CZ: Length Of Cold Zone, Order SampleOL: Total Length.Straight, OD-20mm, HZ-150mm, ... 0180.0120.0090.00630.00470.0030.00270.00260.0023 Double zones Silicon carbide heating elements