High Silica Twisted Rope | Silica Content >98%
High-Temperature Twisted Silica Rope for Thermal Sealing & Fire Protection
High Silica Twisted Rope (>98% SiO₂) is a high-performance thermal insulation and sealing product engineered for extreme heat resistance, structural integrity, and cost-effective high-temperature performance.
Manufactured from continuous high-purity silica fibers and formed into a uniform twisted rope construction, this product delivers excellent thermal insulation, strong tensile strength, and reliable flame resistance in demanding industrial environments.
Designed for continuous operating temperatures up to 1000°C and short-term exposure up to 1200°C, high silica twisted rope is widely used in furnaces, boilers, fire doors, expansion joints, and high-temperature equipment sealing.
Key Performance Advantages
- Silica Content: >98% (Ultra-High Purity SiO₂)
- Continuous Temperature Resistance: Up to 1000°C
- Short-Term Heat Exposure: Up to 1200°C
- Excellent Thermal Insulation & Heat Retention
- High Tensile Strength
- Stable Shape Under Thermal Cycling
- Non-Combustible, Non-Asbestos & Halogen-Free
The twisted construction provides strong axial strength and dimensional stability, making it ideal for static high-temperature sealing applications.
Rope Construction & Engineering Benefits
High Silica Twisted Rope is produced using high-purity silica yarns converted through a controlled leaching process to achieve >98% silica content. The twisted rope design offers:
- High strength along the rope axis
- Consistent diameter and density
- Minimal elongation under load
- Reliable performance in fixed sealing environments
Compared to braided rope, twisted rope provides a more economical solution where extreme flexibility is not required.
Typical Technical Specifications
| Property | Value |
|---|---|
| Product Type | Twisted Rope |
| Silica Content | >98% |
| Construction | Multi-Ply Twisted |
| Diameter Range | 2 mm – 40 mm (custom sizes available) |
| Continuous Temperature | Up to 1000°C |
| Short-Term Temperature | Up to 1200°C |
| Color | White / Off-White |
| Density | Medium to High |
Industrial Applications
Furnace, Boiler & Kiln Sealing
- Furnace door seals
- Boiler access sealing
- High-temperature expansion joints
Foundry & Metal Processing
- Equipment sealing in molten metal areas
- Thermal sealing for ladles and furnaces
- High-temperature protection for joints
Fire Protection Systems
- Fire door and fire damper sealing
- Fire-rated partitions and enclosures
- Passive fire protection assemblies
Power & Process Industries
- Turbine and exhaust sealing
- High-temperature pipe and flange insulation
- Thermal sealing for industrial equipment
Optional Enhancements & Treatments
- Graphite impregnation – improved sealing & lubrication
- Vermiculite treatment – enhanced abrasion resistance
- Stainless steel or Inconel wire reinforcement – added mechanical strength
- Low-dust finishing – improved handling and installation
Standards, Compliance & Quality Assurance
- ASTM E84 – Flame Spread Index
- ASTM C892 – High-Temperature Gasketing
- ISO 9001: Quality Management System
- RoHS & REACH Compliant
- Non-Asbestos & Environmentally Safe
Each batch is supplied with TDS, COA, and full production traceability documentation.
Why Choose Our High Silica Twisted Rope?
- Guaranteed >98% silica purity
- Consistent twisting and diameter control
- Reliable performance in static high-temperature environments
- Custom sizes, profiles & reinforcements available
- Proven global export supply to USA, Europe, Middle East & Asia
FAQs
Twisted rope offers higher axial strength and cost efficiency, while braided rope provides better flexibility and compression recovery.
Yes, it is well-suited for furnace doors, boilers, and static high-temperature sealing applications.
Yes, it is non-combustible and designed for direct flame and high-temperature environments.
Yes, stainless steel or Inconel wire reinforcement is available for added mechanical strength.
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