Firewheel newly developed refractory seal kit consists of glass fiber packing resisting temp. up to 550℃ and high temperature sealant glue temp. resistance up to 1100℃. The packing could be in white or black color with different diameters and the glue with volume 17ml, 30ml,50ml, 70ml,etc. The kit is designed for sealing fire doors of furnace, fireplace, stoves,etc.