High Silica Knitted Rope | Silica Content >98%
Highly Flexible High-Temperature Silica Rope for Dynamic Sealing & Fire Protection
High Silica Knitted Rope (>98% SiO₂) is a premium high-temperature insulation and sealing product engineered for applications requiring maximum flexibility, excellent compression recovery, and resistance to vibration and thermal cycling.
Manufactured from continuous high-purity silica fibers and formed using a knitted construction, this rope provides superior resilience, uniform density, and reliable thermal insulation in demanding industrial environments.
Designed for continuous operating temperatures up to 1000°C and short-term exposure up to 1200°C, high silica knitted rope is widely used in furnace doors, boiler seals, fire doors, expansion joints, and movable high-temperature equipment.
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 Flexibility & Elastic Recovery
- Superior Vibration & Thermal Cycling Resistance
- Low Thermal Conductivity & Heat Loss
- Non-Combustible, Non-Asbestos & Halogen-Free
The knitted structure allows the rope to compress and recover repeatedly without losing sealing performance, making it ideal for dynamic or movable sealing applications.
Rope Construction & Engineering Benefits
High Silica Knitted Rope is produced using high-purity silica yarns converted through a controlled leaching process to achieve >98% silica content. The knitted construction provides distinct engineering advantages:
- Excellent resilience under repeated compression
- Uniform sealing pressure across contact surfaces
- Reduced fiber breakage during installation and use
- Superior adaptability to irregular or moving surfaces
Compared to twisted or braided ropes, knitted rope delivers better long-term sealing performance in dynamic environments.
Typical Technical Specifications
| Property | Value |
|---|---|
| Product Type | Knitted Rope |
| Silica Content | >98% |
| Construction | Circular / Knitted |
| Diameter Range | 3 mm – 50 mm (custom sizes available) |
| Continuous Temperature | Up to 1000°C |
| Short-Term Temperature | Up to 1200°C |
| Color | White / Off-White |
| Density | Medium & Uniform |
Industrial Applications
Furnace, Boiler & Kiln Sealing
- Furnace door and access seals
- Boiler inspection port sealing
- Expansion joints with movement
Fire Protection Systems
- Fire door and fire damper seals
- Fire-rated enclosures and partitions
- Passive fire protection assemblies
Foundry & High-Temperature Processing
- Equipment sealing in vibration-prone areas
- Movable access doors and covers
- High-temperature joint sealing
Power, Oil & Gas Industries
- Turbine and exhaust sealing
- High-temperature flanges with movement
- Thermal insulation for dynamic 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 surface treatment – improved handling and clean 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 Knitted Rope?
- Guaranteed >98% silica purity
- Superior flexibility and compression recovery
- Consistent diameter and density control
- Custom sizes, profiles & reinforcements available
- Trusted global export supply to USA, Europe, Middle East & Asia
FAQs
Knitted rope offers better flexibility, compression recovery, and vibration resistance, making it ideal for dynamic sealing applications.
Yes, it is especially suitable for furnace and boiler doors where frequent opening and closing occurs.
Yes, it is non-combustible and engineered 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