... applications,including automotive flexible connectors, welded bellows, chimney liners, and flexible ducting.309/309S(S30900/S30908)Mn ... min205 min40min95 Rockwell B maxFurnace parts - conveyor belts, rollers, burner parts, refractory supports, retorts and oven linings, ... min40min95 Rockwell B maxFurnace parts such as conveyor belts, rollers, burner parts, refractory supports, retorts and oven linings ...