ZIRCAR Alumina Blanket Type AB & Type MB are low density flexible quilted blankets made from shot free high purity alumina fiber. The fibers in them are of high chemical purity. Stitched together with ceramic yarn these flexible and resilient blankets are easily cut and applied to numerous application with temperatures as high as 1600°C (2912°F). The high purity aluminum oxide fibers exhibit light weight, low thermal conductivity, low thermal mass and immunity to thermal shock. A minor addition of silica in AB modifies the fiber's microcrystalline structure and acts as a grain growth to prevent embrittlement that usually occurs after extended use at elevated temperatures. The silica content in MB promotes the formation of the mullite structure providing stability at elevated temperatures. These blankets resist attack in aggressive chemical environments due to their high purity & refractory nature. AB and MB are ideal for use when layered between rigid insulation, wrapped around process piping or fabricated into folded modules. They are also useful as insulation packing in furnace spaces, around furnace sight tubes & ports and fill in expansion joints and masonry cracks. Alumina Mat offers significant advantages over vitreous alumino-silicate fiber blankets, including: - High temperature dimensional stability - Resilience and flexibility after exposure to elevated temperatures - Exceptional refractoriness