'SAIRBOND is a dry, air-setting high-strength mortar product than can be thinned by adding additional water. It is especially useful for laying fireclay, super duty and 50% alumina firebricks (including high-fired) for low temperature incinerators, air heaters, cyclones, cement preheaters, fluid bed reactors, roasters, and vertical shaft furnaces. Manufactured by HarbisonWalker International. Available in 55 lb. bags.