Silica Insulation Materials
Silica Mat / Felt / Blanket
Extreme heat 1260°CNon-combustibleKilns & reactorsGlobal standard
Service temperature
Extreme heatUp to 1200°C
Main applications
RCF classified at 1260°Cλ = 0.16 W/mK at 800°C
- the global standard ceramic insulation for kilns
- petrochemical reactors and boiler linings
Key Features
🔥
Very high heat resistance
1100°C continuous, 1200°C intermittent — the fiber structure holds even in extreme conditions
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Superior insulation and energy retention
Thermal conductivity of 0.03–0.06 W/m·K — far better than glass fiber
✅
Zero hazardous substances
Asbestos-free and non-toxic — no gas or smoke emission at temperature
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Dense, resilient and dimensionally stable
Compression-formed without binder — holds up at temperature and cuts, forms and layers easily
⚡
Dielectric performance and durability
Retains electrical insulation at temperature; the high-density grade (up to 200 kg/m³) has excellent mechanical strength
Specifications
| Service temperature | Up to 1200°C |
| Material composition | High-purity silica fiber (SiO₂ content 96–99%) |
| Thermal conductivity | Approx. 0.03–0.06 W/m·K |
| Density | Standard 100–130 kg/m³ / high density 180–200 kg/m³ |
| Thickness options | 3 mm – 50 mm (common: 6T, 10T, 25T) |
| Key features | Asbestos-free, non-toxic, no outgassing, electrically insulating |
Applications
Steel, foundry & power
- •Melting furnace insulation and infill
- •Boiler combustion chamber infill
- •Slag barrier material
Petrochemical & process
- •Insulation of distillation columns and hot pipelines
- •Valve sealing and high-temperature packing
Automotive & aerospace
- •Exhaust system heat shielding
- •Heat shield covers around engines
Fire-rated construction
- •Firewall infill
- •High-temperature panel insulation and heater packing
Notes
- ※A solution well beyond the 600–700°C ceiling of glasswool — and free of the binder combustion-gas problem at temperature.
- ※More cost-competitive than ceramic felt, delivering comparable heat resistance at lower cost.
- ※Custom cutting to thickness, density and width available — full specifications provided with your quotation.