Quartz Fiber Knitted Sleeve
Flexible High-Purity Quartz Fiber Knitted Sleeve for Extreme Heat & Electrical Insulation
Quartz Fiber Knitted Sleeve is a high-performance tubular insulation sleeve manufactured from continuous amorphous quartz fibers with SiO₂ ≥ 99.9%.
The knitted construction provides exceptional flexibility, elasticity, and conformability, making it ideal for thermal insulation, electrical cable protection, and fire-resistant sleeving where frequent movement or tight bends are required.
Compared to braided sleeves, knitted quartz sleeves offer greater stretch, better vibration absorption, and easier installation, while maintaining excellent thermal and dielectric properties for critical high-temperature environments.
Key Performance Advantages
- Silica (SiO₂) Content: ≥99.9% (Ultra-High Purity Quartz)
- Continuous Operating Temperature: Up to 1050°C
- Short-Term Temperature Resistance: Up to 1200°C
- Knitted Structure for Maximum Flexibility & Elasticity
- Excellent Dielectric Strength & Electrical Insulation
- Low Thermal Expansion & Minimal Shrinkage
- Good Abrasion Resistance & Vibration Damping
- Non-Combustible, Non-Asbestos & Halogen-Free
Quartz fiber knitted sleeve retains insulation performance and mechanical integrity under thermal cycling and dynamic operating conditions.
Knitted Construction Benefits
The loop-based knitted structure offers:
- High stretch and recovery for easy installation
- Superior conformability around irregular shapes
- Reduced stress on cables and components
- Uniform wall thickness for consistent insulation
This makes it especially suitable for moving cables, vibration-prone systems, and complex assemblies.
Typical Technical Specifications
| Property | Value |
|---|---|
| Product Type | Quartz Fiber Knitted Sleeve |
| Fiber Composition | Amorphous Quartz Fiber |
| SiO₂ Content | ≥99.9% |
| Construction | Knitted Tubular Sleeve |
| Inside Diameter | 4 – 120 mm (custom sizes available) |
| Wall Thickness | 0.8 – 3.0 mm |
| Continuous Temperature | Up to 1050°C |
| Short-Term Temperature | Up to 1200°C |
| Color | Bright White |
Industrial Applications
Electrical & Cable Protection
- High-temperature cable insulation
- Electrical wire and harness protection
- Fire-resistant sleeving for power systems
Aerospace & Defense
- Flexible insulation for wiring assemblies
- Thermal protection for moving components
- Fire-resistant sleeving in aircraft systems
High-Temperature Industrial Use
- Hose and pipe insulation
- Furnace and kiln equipment protection
- Heat shielding in industrial plants
Semiconductor & Cleanroom
- High-purity insulation
- Contamination-free thermal sleeving
Optional Treatments & Customization
- Heat-cleaned finish for ultra-high purity
- Dielectric-optimized low-moisture versions
- Pre-cut lengths or continuous reels
- Custom diameters and wall thicknesses
Standards, Compliance & Quality Assurance
- ASTM E84 – Flame Spread Index
- ASTM D149 – Dielectric Breakdown Voltage
- ISO 9001 – Quality Management System
- RoHS & REACH Compliant
- Non-Asbestos & Environmentally Safe
Each production batch is supplied with TDS, COA, and full traceability documentation.
Why Choose Our Quartz Fiber Knitted Sleeve?
- Ultra-high purity ≥99.9% SiO₂ quartz fibers
- Exceptional flexibility and ease of installation
- Reliable thermal and electrical insulation
- Consistent quality with global export capability
- Trusted supplier to USA, Europe, Middle East & Asia
FAQs
Knitted sleeves offer higher flexibility, stretch, and vibration absorption.
Yes, its elastic structure is ideal for dynamic and vibration-prone applications.
Yes, they withstand continuous temperatures up to 1050°C.
Yes, it is completely non-asbestos and environmentally safe.