Details
High Silica Fiberglass Sleeving
High Silica Fiberglass Sleeving is a flexible, tubular，premium high-temperature resistant component, precision-braided from continuous high silica fiberglass yarns with a SiO₂ content of ≥96%. Through specialized post-treatment (including pre-shrinking and surface smoothing), the silica sleeving retains exceptional flexibility, smoothness, and structural integrity，even under extreme thermal conditions.
Unlike woven tape or fabric, sleeving is constructed directly in its tubular form, resulting in a continuous, flexible hose-like product with a consistent diameter. The braiding angle and density can be adjusted to control flexibility, expansion capability, and wall thickness. High silica sleeving integrates superior thermal insulation, chemical resistance, and mechanical durability, while being non-toxic and low-smoke. This makes it an ideal solution for protecting components, wires, and equipment in harsh high-temperature industrial environments.
Identification:
SiO2 Content | ≥96% |
Inner Diameter (mm) | 3–100mm (standard); custom sizes available |
Wall Thickness (mm) | 0.5-5.0 (customizable) |
Areal Density (Tex) (g/m2) | 8-300 |
Shrinkage (1000℃, 24hrs) | ≤5% |
Continuous Operating Temp | 1100℃ (2012°F) |
Short Time Working Temp | 1400°C (2552°F) (≤60 minutes) |
Instant Peak Temp | 1650℃ (3002°F) (≤10 minutes) |
Braiding Pattern | Diamond braid (standard); custom braids available |
Breaking Strength (N) | ≥50 (for ID ≤20mm); ≥100 (for ID >20mm) |
Chemical Resistance | Resistant to acids, alkalis (except hydrofluoric acid), and organic solvents |
Flexibility | Highly flexible, bendable without cracking |
Smoke Emission | Low, no toxic fumes |
Tolerance (ID) | ±0.3mm (ID ≤20mm); ±0.5mm (ID >20mm) |
Tolerance (Thickness) | ±0.1mm (thickness ≤1.0mm); ±0.2mm (thickness >1.0mm) |
What are the key features of high silica sleeving?
-Extreme Temperature Resistance: Sustains continuous use at 1100℃, short-term exposure to 1400℃, and instant peaks at 1650℃ without melting or degradation.
-Superior Thermal Insulation: Low thermal conductivity minimizes heat transfer, protecting internal wires, hoses, or pipes from high external temperatures.
-Strong Chemical Resistance: Withstands most acids, alkalis, and organic solvents (excluding HF), suitable for corrosive industrial environments.
-Exceptional Abrasion & Cut Resistance: Durable braided structure resists wear, tearing, and mechanical damage during installation and long-term use.
-High Flexibility: Remains flexible and smooth even at high temperatures, enabling easy wrapping around curved surfaces or tight spaces.
-Minimal Shrinkage: Pre-shrinking treatment ensures ≤5% shrinkage at 1000℃, maintaining dimensional stability and fit.
-Excellent Electrical Insulation: Retains dielectric strength at elevated temperatures, ideal for insulating industrial wires and cables.
-Easy Installation: Lightweight, flexible, and easy to cut to desired lengths—no -Non-Toxic & Low-Smoke: Complies with safety standards, emitting no harmful fumes during high-heat exposure.
How many types of high silica fiberglass sleeving are there?
Based on construction, high silica sleeving can be classified as below:
-Standard Braid (Single Layer): The most common type. Balanced flexibility, expansion, and protection. Available in a wide range of diameters.
-Tight Braid (High-Density): Reduced expansion but superior abrasion resistance and improved containment of hot gases/particles. Used for heater and thermocouple insulation.
-Loose/Expandable Braid: Maximum expansion capability (up to 50% diameter increase) for slipping over connectors, terminals, or bulky components.
What advantages or benefits silica sleeving can bring to customers?
-Easy Retrofit Installation: Can be slipped over existing wiring or components without disconnection, making it ideal for upgrades and repairs.
-Bundle Protection: A single large-diameter sleeving can protect an entire wire loom or hose bundle, simplifying layout and improving organization.
-Strain Relief & Damage Prevention: Protects against chafing, vibration, and accidental impact, extending the service life of expensive wiring and instrumentation.
-Containment & Safety: Contains hot fragments, sparks, or potential leakage from heated components, enhancing system safety.
-Weight Savings: Significantly lighter than metal conduit or rigid ceramic insulators, crucial in aerospace and automotive applications.
-Maintains Flexibility: Unlike rigid insulation, it allows for movement and servicing of the protected components.
-Clean and Non-Toxic: Safer to handle than asbestos; emits no harmful fumes when heated.
Technical Parameters:
Product Code | Density (tex g/m2) | Thickness (mm) | ID (mm) | SiO2% | Shrinkage (1000℃) |
HSS3 | 8 | 0.7 | 3 | ≥96 | ≤5% |
HSS5 | 15 | 0.7 | 5 | ≥96 | ≤5% |
HSS8 | 35 | 1.0 | 8 | ≥96 | ≤5% |
HSS10 | 45 | 1.2 | 10 | ≥96 | ≤5% |
HSS16 | 65 | 1.2 | 16 | ≥96 | ≤5% |
HSS20 | 90 | 1.2 | 20 | ≥96 | ≤5% |
HSS25 | 95 | 1.2 | 25 | ≥96 | ≤5% |
HSS30 | 100 | 1.2 | 30 | ≥96 | ≤5% |
HSS35 | 130 | 1.2 | 35 | ≥96 | ≤5% |
HSS40 | 165 | 1.2 | 40 | ≥96 | ≤5% |
HSS64 | 180 | 1.2 | 64 | ≥96 | ≤5% |
HSS70 | 155 | 1.0 | 70 | ≥96 | ≤5% |
HSS80 | 177 | 1.0 | 80 | ≥96 | ≤5% |
Note: Custom specifications (ID, thickness, density, braiding pattern) available via OEM/ODM.
What applications are high silica fiberglass sleeving used for?
The sleeving is widely used across high-temperature industries, including:
1.Electrical & Electronics: Insulation and protection for industrial wires, cables, and heating elements in motors, transformers, and power plants.
2.Automotive & Motorcycle: Exhaust system insulation, wire harness protection, noise reduction, and exhaust filter insulation.
3.Aerospace & Defense: Thermal protection for aircraft engine components, rocket wiring, and military equipment.
4.Metallurgy & Foundry: Protection for hoses/pipes in furnaces, molten metal handling equipment, and welding insulation.
5.Chemical & Petrochemical: Corrosion-resistant insulation for pipelines, valves, and hydraulic hoses in corrosive environments.
6.Renewable Energy: Thermal insulation for solar panel components, wind turbine wiring, and battery systems.
7.Medical & Electronic Cigarettes: Small-size sleeves for rebuildable atomizers and high-temperature medical equipment.
8.Industrial Machinery: Protection for hydraulic hoses, mechanical cables, and equipment wiring exposed to high heat.
9.Personnel Protection: Components for high-temperature protective clothing, gloves, and gear.
10.Filtration: Filter media for high-temperature metallic solutions and industrial exhaust systems.
How to store and handle high silica fiberglass sleeving?
1.Environmental Conditions: Store in a cool, clean, dry area with temperature 15–35℃ and relative humidity 35–65%. Avoid "cold" (corrected for consistency with industry standards).
2.Packaging Protection: Keep in original moisture-proof packaging (kraft paper + PE film) until use. Do not open packages prematurely to prevent moisture absorption or contamination.
3.Avoid Hazards: Protect from rain, direct sunlight, and corrosive substances (acids, alkalis, solvents).
4.Shelf Life: No defined shelf life when stored properly. Retest for performance after 3 years from the production date to ensure optimal functionality.
5.Handling Tips: Use clean, dry tools when cutting. Avoid pulling or stretching excessively during installation to prevent damage to the braided structure.
FAQ
Question 1: Are the listed specifications the only ones you can produce?
A: No. The specifications above are our standard or most in-demand products. We accept custom orders for inner diameter, wall thickness, density, braiding pattern, and length.
Question 2: What is the difference between High Silica Sleeving and Fiberglass Sleeving?
A: Temperature is the key difference. Fiberglass sleeving (typically E-Glass) is rated for up to ~600°C continuous and will melt above that. High Silica Sleeving is for 1100°C+ continuous service. Fiberglass is also more abrasive to wires and has a higher thermal conductivity. High silica is the choice for the most extreme environments.
Question 3: How do I select the correct inner diameter (ID) of high silica sleeving?
A: General Rule: The sleeving ID should be 25-40% larger than the outer diameter of the object you are covering. This allows for easy installation over connectors and provides an air gap that enhances insulation. For bundled wires, calculate the effective diameter of the bundle. You are invited to consult with us about the selection.
Question 4: What causes sleeving to become brittle and crack over time?
A: For uncoated sleeving, embrittlement is primarily caused by devitrification—the slow conversion of amorphous silica to crystalline cristobalite at sustained temperatures above 1100°C. For silicone-coated sleeving, embrittlement is usually due to thermal aging of the silicone polymer at its upper-temperature limit, or exposure to UV light or ozone.
Question 5: How does it compare to ceramic fiber (alumina-silica) sleeving?
A:
-High Silica: Lower density, better thermal shock resistance, lower thermal conductivity, more flexible. Max use ~1100°C.
-Ceramic Fiber: Higher tensile strength, higher modulus (stiffer), higher maximum temperature (up to 1260°C+ for some grades). Often used in rigid or semi-rigid applications.
-Choice: High silica for ultimate flexibility and thermal shock; ceramic fiber for higher temp and where more rigidity is acceptable.
