The Gen-Sil line of silica brick now includes two upgraded higher density compositions. Gen-Sil Elite and Gen-Sil OF are designed to provide improved service life in oxyfuel applications. Gen-Sil OF meets customer requests for a purer and stronger ASTM Type "A" silica brick. It features a 33% reduction in calcium oxide and increased cold crushing strength. The combination of Gel-Sil OF and Gen-Sil Lite provides an economical approach to improved crown line.