Dielectric Low Moisture High Silica Cloth | Silica Content >98%
High-Temperature Electrical Insulation Silica Fabric with Superior Dielectric Stability
Dielectric Low Moisture High Silica Cloth (>98% SiO₂) is a specialized high-temperature textile engineered for applications requiring excellent electrical insulation, low moisture absorption, and extreme thermal resistance.
Manufactured from ultra-high-purity silica fibers and processed with controlled surface treatment, this fabric maintains stable dielectric properties even in humid and high-voltage environments.
Designed for continuous operating temperatures up to 1000°C and short-term exposure up to 1200°C, this dielectric-grade high silica cloth is widely used in electrical insulation systems, power generation equipment, aerospace electronics protection, and high-voltage thermal barriers.
Key Performance Advantages
- Silica Content: >98% (Ultra-High Purity SiO₂)
- Dielectric Strength: Excellent electrical insulation performance
- Low Moisture Absorption: Maintains insulation integrity in humid conditions
- Continuous Temperature Resistance: Up to 1000°C
- Short-Term Heat Resistance: Up to 1200°C
- Low Thermal Conductivity
- Non-Combustible, Non-Asbestos & Halogen-Free
The low-moisture formulation minimizes dielectric loss and prevents electrical leakage, making it ideal for high-voltage and critical insulation environments.
Fabric Engineering & Electrical Performance
Dielectric Low Moisture High Silica Cloth is produced using high-purity silica yarns with a controlled finishing process that:
- Reduces moisture uptake
- Improves surface insulation resistance
- Enhances dielectric breakdown voltage
- Maintains stable electrical properties under thermal cycling
Unlike standard high silica fabrics, this dielectric-grade cloth is optimized for electrical insulation reliability under both heat and humidity.
Typical Technical Specifications
| Property | Value |
|---|---|
| Silica Content | >98% |
| Moisture Absorption | Very Low |
| Dielectric Strength | High |
| Continuous Temperature | Up to 1000°C |
| Short-Term Temperature | Up to 1200°C |
| Thickness | 0.1 – 1.5 mm (customizable) |
| Areal Weight | 100 – 1200 g/m² |
| Color | White / Off-White |
| Standard Width | Up to 1500 mm |
Industrial Applications
Electrical & Power Industry
- High-voltage insulation barriers
- Transformer and generator insulation
- Electrical panel thermal shielding
Aerospace & Electronics Protection
- Thermal insulation for avionics
- Electrical isolation in high-temperature zones
- Heat-resistant dielectric barriers
High-Temperature Insulation Systems
- Fire-resistant electrical enclosures
- Heat shields with electrical isolation
- Combined thermal & electrical insulation assemblies
Industrial Heating Equipment
- Insulated cable protection
- Furnace electrical component shielding
- High-temperature wiring protection
Optional Surface Treatments & Enhancements
- Silicone coating – enhanced moisture resistance
- PTFE or specialty dielectric finishes – improved electrical insulation
- Aluminum foil lamination – radiant heat reflection with insulation
- Low-dust surface treatments – cleanroom-friendly applications
Standards, Compliance & Quality Assurance
- ASTM D149 – Dielectric Breakdown Voltage
- ASTM E84 – Flame Spread Index
- ASTM D6413 – Vertical Flame Resistance
- ISO 9001: Quality Management System
- RoHS & REACH Compliant
- Non-Asbestos & Environmentally Safe
Each batch is supplied with TDS, COA, dielectric test reports, and full traceability documentation.
Why Choose Our Dielectric High Silica Cloth?
- Guaranteed >98% silica purity
- Low-moisture, dielectric-optimized formulation
- Consistent electrical & thermal performance
- Custom engineering and export documentation support
- Trusted global supplier to USA, Europe, Middle East & Asia
FAQs
It is engineered with low moisture absorption and enhanced electrical insulation properties to maintain dielectric stability under heat and humidity.
Yes, it is specifically designed for high-voltage and electrical insulation environments.
Yes, the low-moisture formulation significantly reduces performance degradation in humid environments.
Yes, it is compatible with silicone, PTFE, and aluminum foil treatments for enhanced performance.
Product Tags
Dielectric high silica cloth, low moisture silica fabric, electrical insulation silica cloth, high temperature dielectric fabric, high voltage insulation silica cloth, fire resistant electrical insulation fabric