... refractoriness,High density. 2.Classification temperatures:1100,1260,1360,1430. 3.Excellent thermal insulation propert ceramic fiber board,ceramic fire board,ceramic insulation boardCharacteristic ... )3(1100)3(1250)-3(1350Thermal conductivity (w/m.k)(density 285kg/m3)0.085(400)0.132(800)0.18 ... -temperature seal;daily-use electrical heat insulation and retardant. Ceramic fiber board(1100,1260,1360,1430)