FHL-VAC® Modules & Panels
FHL-VAC® Flat Insulation Panel
Rigid, vacuum-formed ceramic fiber panels for lightweight, energy-efficient furnace insulation.
FHL-VAC® Flat Insulation Panels are rigid, vacuum-formed ceramic fiber boards engineered for hot-face and backup insulation in industrial furnaces, kilns, and ovens. Designed to minimize thermal mass and heat storage, these panels help reduce heat losses, improve thermal efficiency, and enable faster heating and cooling cycles. High Dense Refractories are available for applications requiring dense, robust refractory linings.
Up to 1200°CKey features
High Dense Refractories — specified for high ramp & cooling cycles
Low thermal conductivity across the full temperature range
Rigid, self-supporting board — easy to cut, drill and install
Asbestos-free ceramic fiber
Three grades: FHL-M 1150, FHL-Z 1325 and FHL-HT 1550
Custom-built to your exacting dimensional requirements
Every panel is manufactured with advanced vacuum-forming technology for uniform density, tight dimensional tolerances and a smooth, erosion-resistant working face. Panels are environmentally friendly and available in three temperature grades up to 1550°C.
Custom-Built Parameters
- Thickness
- 25 / 50 / 75 / 90 / 100 / 125 / 150 mm standard · other thickness can be customised
- Board size (L × W)
- Up to 950 × 950 mm per board
- Grades
- FHL-M 1150 · FHL-Z 1325 · FHL-HT 1550
Typical Applications
Technical data
Published grade data for FHL-VAC® insulation. Values are typical for the grade; confirm design values with our engineers for your duty cycle.
Technical Data — FHL-VAC® Modules & Panels
| Parameter | FHL-M 1150 | FHL-Z 1325 | FHL-HT 1550 |
|---|---|---|---|
| Classification Temperature (°C) | 1260 | 1425 | 1650 |
| Max. Continuous Working Temp. (°C) | 1150 | 1325 | 1550 |
| Density Range (kg/m³) | 200 – 240 | 200 – 240 | 200 – 240 |
| Linear Shrinkage % (24 h at Continuous Working Temp.) | < 1 | < 1 | < 1 |
Chemical Composition (%)
| Component | FHL-M 1150 | FHL-Z 1325 | FHL-HT 1550 |
|---|---|---|---|
| Al₂O₃ | 47 | 37.5 | 66 |
| SiO₂ | 53 | 49.5 | 33 |
| Zr | — | 13 | — |
Thermal Conductivity (W/mK)
| Mean Temperature | FHL-M 1150 | FHL-Z 1325 | FHL-HT 1550 |
|---|---|---|---|
| At 200°C | 0.065 | 0.065 | 0.065 |
| At 600°C | 0.13 | 0.13 | 0.14 |
| At 1000°C | 0.27 | 0.28 | 0.24 |
| At 1200°C | 0.40 | 0.38 | 0.33 |
| At 1300°C | 0.48 | 0.47 | 0.39 |
| At 1400°C | — | 0.53 | 0.45 |
| At 1500°C | — | — | 0.51 |
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Need Flat Insulation Panel built to your drawing?
Send us your chamber dimensions, temperature and cycle — we will respond with a technical proposal and quotation.