E.R. Advanced Ceramics ceramic, ceramic tubes, kiln, kiln liner, Custom Ceramic Shapes, Custom Extruded Ceramic Tubes, Muffle Plates, Foundry Filters, Heater Plates, Wire Nuts, Casting, Kiln Related Parts, toll manufacturing, element supports, electrica insulators, high temperature ceramics, wear resistant ceramics, alumina E.R. Advanced Ceramics, Inc. - For more than 80 years U.S. Refractories™ has produced ceramic parts using one of three methods. By casting, pressing, or extruding we can form almost any of your unique and complicated shapes with a wide variety of equipment and materials. We have wet press capabilities and utilize hand operated manual presses for this application along with automatic, hydraulic, and extrusion presses. Casting is another one of our specialties. Parts range from small spools through 210 gallon, monolithic design ceramic ball mill liners. This one piece design greatly reduces contamination when milling.