Aremco Products Inc.
Ceramabond™ 813A is a single part, alumina-silica filled paste that bonds tenaciously to ceramic, refractory and metal substrates. It can work in operating temperatures to 3000°F (1650°C) and exhibits exceptional mechanical strength, electrical and chemical resistance. The adhesive provides torque strength of 18.5 ft-lb, a volume resistivity of 109 ohm-cm and dielectric strength of 250 volts/mil. The coefficient of thermal expansion is 4.0 ppm/°F (7.2 ppm/°C). Once applied, curing is accomplished by heating at 200°F (93°C) for three hours or drying at room temperature for 24 hours. In additional to sealing tundish nozzles, it can be used to bond refractory shapes to metal shells and seal other refractory structures from leakage by molten metals.