... Silicon Carbide rod,2. Diameter, 8-54mm,3. Length, 240-4000mm.Model: Straight Silicon Carbide rod Features:1 ... DescriptionsOD: Outer Diameter;HZ: Length Of Hot Zone,CZ: Length Of Cold Zone,OL: Total Length. Order SampleStraight, OD-20mm ... zone (HZ, mm)Cold zone (CZ, mm)Overall length (OL, mm)Range of resistance (ohms)8100-30060-200240 ... 1 year limited Kejia SiC Refractory With Max. Temperature 1500C