Low thermal conductivity flexible insulation material

Pyrogel™ XTE

Pyrogel XTE is a heat insulation Aerogel blanket that is made by impregnating silica Aerogel into glass fiber cloth.
Silica Aerogel is known as a material with the lowest thermal conductivity of any solid. It has features such as excellent thermal insulation properties, water repellency, flexibility, environmental safety, and ease of handling, and can achieve excellent heat insulation performance. Pyrogel XTE is an ideal heat insulation material for retaining heat in high-temperature pipes, equipment, and tanks, and is essential for pursuing the best possible thermal efficiency.

Product Category

Thermal Insulation MaterialMinus to Room TemperatureRoom Temperature to 200°CUp to 600°CConstruction Work (Lagging, Cold Storage, Fire-Proofing and Sound-Proofing)Hot and Cold Insulation WorkOther ServicesEnergy Saving Diagnostic System


Chemistry & PetrochemistryOil Refining & PetrochemistryChemistryEnergy (Electricity, Gas, Heat Supplies)Thermal Power Stations (Coal)Thermal Power Stations (LNG)Nuclear Power StationsHydrogen and AmmoniaBiomass Power Generation and Heat Supply Plants


Compared to conventional heat insulation materials such as rock wool heat insulation materials, calcium silicate heat insulation materials, and water-repellent perlite heat insulation materials, it has between approximately one-half to one-third the thermal conductivity.
Despite being thinner, it offers heat insulation performance equivalent to that of conventional heat insulation materials.
It is both water-repellent and permeable to water vapor. It emits moisture from the inside of the heat insulation material to the outside in the form of vapor and also prevents the ingress of rainwater from the outside surface of the heat insulation material, thereby reducing the risk of corrosion under insulation (CUI).
It is a soft and flexible sheet with excellent recovery properties.
It can easily be cut with a box cutter knife or the like and adapts to complex shapes, curves, and narrow spaces.
Different from pipe covers and molded board-shaped heat insulation materials, Pyrogel XTE can support various pipe diameters, shapes, and thicknesses on its own.


Thickness 5mm 10mm
Width × lengthNote 1 1.45m×14.4m 1.45m×7.2m
Working temperatureNote 2 -40°C to 650°C
Color Maroon
DensityNote 3 200kg/m3
Water repellencyNote 4 Yes
Note 1: The width indicates the product’s nominal dimensions.
Note 2: Pyrogel XTE may generate heat on its own depending on the usage method. If the temperature of the installation site is 400°C or more, please consult us.
Note 3: The density is a typical value.
Note 4: The water repellency is maintained when heated. If the water repellent (silane compound) experiences thermal decomposition, some pyrolysis gas may be produced.

Thermal conductivity

Mean temperature (°C) 0 100 200 300 400 500 600
Thermal conductivity Note 5
W/ (m・K)
0.020 0.023 0.028 0.035 0.046 0.064 0.089
Note 5: The value at the time of manufacturing, which was measured with a load of 1.41N/cm2 in accordance with ASTM C177.

Heat insulation material thickness comparison


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