Halogen-Free Graphite-Based Rigid Intumescent Strip – HGYY-A813
A high-density, halogen-free rigid intumescent strip for fireproof sealing of open cavities and concealed sockets. Generates high expansion pressure and volume when heated above 180°C. Higher density than flexible grades provides better dimensional stability under mechanical load during installation
Technical Specifications
| Parameter | Value |
|---|---|
| Product Model | HGYY-A813 |
| HS Code | 3920999090 |
| Density | 1,350 kg/m³ |
| Free Expansion Ratio | 20x (550°C, 30 min, 5mm thickness sample) |
| Activation Temperature | 180°C (356°F) |
| Halogen Content | None |
| Aluminum Foil Coating | Available on request |
| Dimension | Range |
|---|---|
| Thickness | 2–8 mm |
| Max Length | ≤2,000 mm |
| Custom dimensions | Available |
When to Specify Rigid vs Flexible
Rigid intumescent strip (HGYY-A813):
→ Open cavities with fixed geometry
→ Concealed sockets and junction boxes
→ Locations requiring the strip to bear installation pressure
→ Applications where dimensional stability before activation is critical
Flexible intumescent strip (HGYZ-AW715):
→ Irregular surfaces and non-standard geometries
→ Pipe penetration wrapping
→ Ventilation duct applications
→ Component in collar and wrap assemblies
【FAQ】
Q: Can HGYY-A813 be cut to custom lengths on site?
Yes. The rigid strip can be cut with standard tools to required
lengths. Pre-cut supply is available for high-volume orders.
Q: Is there a density advantage to using rigid over flexible strip?
Higher density (1,350 vs 1,250 kg/m³) provides greater resistance
to compression during installation, making it more suitable for
applications where the strip must hold its shape before activation.