Fused cast refractory material

North Refractories maintains an inventory of standard extruded and cast aluminum oxide, mullite and sialon shapes for fast delivery requirements. These are low cost, quality ceramic rods and tubes... North Refractories maintains an inventory of standard extruded and cast aluminum oxide, mullite and sialon shapes for fast delivery requirements. These are low cost, quality ceramic rods and tubes that can be quickly cut to precision lengths. (See Mullite Sizes, Aluminum Oxide Sizes and Sialon Sizes). NR will also custom fabricate any tube geometry not shown in the standard catalog list. Please call us for your special requirements or send your engineering drawings for quotation. Manufacture Low cost, volume manufacturing processes are used to produce these tubes. Strong and impervious, they are extruded in smaller sizes and cast in larger sizes then batch fired at high temperatures in specialty kilns to maintain dimensional integrity and consistent material properties. Properties Detailed information on the mullite, aluminum oxide and sialon is available in the Materials section. The mullite is characterized by a low thermal expansion coefficient. The aluminum oxide is noted for it抯 superior refractoriness. Sialon is an outstanding thermal shock resistant material. Each material offers the designer, engineer and scientist a cost effective, electrically insulating, high temperature material. Applications Mullite, aluminum oxide and sialon rod and tubing find a wide range of applications throughout industry and academia. Their excellent combinations of material properties make them suitable for a wide range of demanding thermal, chemical, wear and electrical