Graphite Coated Fiberglass Cloth is a woven E-glass fabric with expanded graphite coated on both surfaces. This graphite coated fiberglass fabric, also sold as graphite coated glass cloth, is designed for thermal seals, expansion joints, and gaskets. Continuous operating temperature is 550 °C. Short-term peak is 650 °C. Standard thicknesses are 0.4 mm, 0.6 mm, and 0.8 mm. Standard widths are 1000 mm and 1500 mm.
Applications
- Expansion joint fabric and compensators
- Flange gaskets and manhole seals
- Furnace door curtains and heat shields
- Duct connectors and damper seals
- Anti-stick liners for hot processes
Technical Specifications
| Property |
GC-0.4 |
GC-0.6 |
GC-0.8 |
Test Method |
| Total thickness (mm) |
0.40 ±0.05 |
0.60 ±0.06 |
0.80 ±0.08 |
ISO 3611 |
| Total area weight (g/m²) |
430 ±30 |
630 ±40 |
840 ±50 |
ISO 3374 |
| Base fabric weight (g/m²) |
400 |
600 |
800 |
— |
| Graphite coat type |
Expanded graphite, both sides |
Expanded graphite, both sides |
Expanded graphite, both sides |
Visual / LOI |
| Width (mm) |
1000 / 1500 |
1000 / 1500 |
1000 / 1500 |
Steel tape |
| Warp tensile strength (N/50 mm) |
≥2000 |
≥2800 |
≥3800 |
ISO 13934-1 |
| Weft tensile strength (N/50 mm) |
≥1500 |
≥2200 |
≥3000 |
ISO 13934-1 |
| Continuous service temp. (°C) |
550 |
550 |
550 |
Internal method |
| Short-term peak temp. (°C) |
650 |
650 |
650 |
— |
| Loss on ignition (%) |
≤45 |
≤45 |
≤45 |
ISO 1887 |
| Moisture content (%) |
≤1.0 |
≤1.0 |
≤1.0 |
ISO 3344 |
| Thermal conductivity at 200 °C (W/m·K) |
0.12 |
0.12 |
0.13 |
ISO 8302 |
Key Performance Data
- Graphite coat delivers a coefficient of friction below 0.15 against steel at 200 °C. No adhesive bonding to metal flanges after 500 hours at 500 °C.
- After 100 hours at 550 °C, tensile strength retention exceeds 80 % for the 0.4 mm variant.
- Resistant to hot water, steam, mineral acids (except HF and hot phosphoric acid), and alkalis up to 100 °C. Graphite layer restricts acid penetration.
- Non-flammable. Meets ISO 1182. Self-extinguishing, zero afterglow.
Certifications & Compliance
- ISO 9001:2015 – certified quality management system.
- RoHS (Directive 2011/65/EU) – compliant for thermal insulation textiles.
- Third-party test reports for graphite content, tensile strength, and thermal resistance available upon request.
OEM/ODM Customization
| Customization option |
MOQ |
Sample lead time |
Sample charge |
| Thickness (0.25 mm–1.5 mm) & width (up to 2000 mm) |
500 kg per size |
7 working days |
USD 100 (refunded on order) |
| Coating weight & single-side coating |
500 kg |
10 working days |
USD 120 (refunded on order) |
| Private label & custom packaging |
500 rolls |
3 working days (artwork) |
Free |
Packaging & Container Loading
- Roll length: 30 m standard (50 m available).
- Each roll wrapped in PE film → packed in 5‑ply corrugated box.
- Boxes stacked on ISPM 15 heat-treated fumigated pallet (1.1 m × 1.1 m).
- Maximum pallet gross weight: 1000 kg.
- 20GP container: 10 pallets, approx. 10 metric tons net.
Quality Control
- Incoming inspection: glass filament diameter (ISO 1888) and sizing type verified per lot.
- In‑line monitoring: thread count and graphite coat weight checked every 100 m.
- Batch traceability: unique lot code traces finished roll to base fabric batch and coating date.
Lead Time & Supply
| Order size |
Lead time |
| ≤500 kg |
12 working days |
| FCL (approx. 10 MT) |
18 working days |
| Trade term |
FOB Shanghai (EXW available) |
Downloads
Full Thermal Insulation Materials Catalogue (PDF)
