Thermbond Formula 6A is the more abrasion resistant, higher densisty castable of the Thermbond product line. With its unique two-part binder system Thermbond sets up extremely fast and will bond easily to old refractory or other material. Ideal for quick patching, problem areas and to fix hot spots fast. Maximum Service Temp: 3000 F / 1649 C Bulk Density: 160 lbs/ft3 2563 kg/m3 Bag weight: 63lbs. / 28.6 kg Sets up in seconds for extremely strong cold/green strength and allows for fast heat up schedules. Give it a try and see for yourself how strong Thermbond is and how their is no other refractory product like it. Call for pricing or email for pricing 1-800-544-9043 sales@refwest.com Thermbond Activator required available in 1 or 55 Gallon Containers