Ceramic Fiber Insulation Insulation Material Aluminum Silicate Overall Length 3 in Overall Width 3 in Thickness 1 in Maximum Use Temperature 2 300 Degrees F Density 8 lb/cu ft R Value @ 1000F 1.06 Form Bulk Flexibility Flexible Standards UL 723 Pipe Insulation Item Ceramic Fiber Insulation Maximum Continuous Use Temperature 1 922 Degrees F For Piping System Commercial Industrial Process For Use On Pipe Insulation Insulation Color White