Halogen-Free Graphite-Based Flexible Intumescent Strip – HGYZ-AW715
A halogen-free, graphite-based flexible intumescent strip generating high expansion pressure and volume when heated. Widely used for fireproof sealing of plastic pipes, ventilation ducts, and open cavities. Available with optional aluminum foil coating. Manufactured by FireEG, Hebei, China.
Technical Specifications
| Parameter | Value |
|---|---|
| Product Model | HGYZ-AW715 |
| HS Code | 3920999090 |
| Density | 1,250 kg/m³ |
| Free Expansion Ratio | 18x (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 | 3–14 mm |
| Max Width | ≤2,100 mm |
| Custom dimensions | Available |
Applications
✓ Fireproof sealing around plastic pipe penetrations
✓ Ventilation duct penetration sealing
✓ Open cavity and service void firestopping
✓ Component in custom fire collar and wrap assemblies
✓ Industrial and commercial building fire compartmentation
Product Features
Flexible format for complex geometries The flexible graphite matrix conforms to irregular surfaces and non-standard penetration shapes — suitable for site-cut installation and pre-fabricated collar assembly.
Aluminum foil coating option An aluminum foil surface coating is available for applications requiring improved handling durability, moisture resistance, or aesthetic finish in visible installations.
Halogen-free formulation No HCl, HBr, or other halogenated compounds are released during activation. Suitable for projects specifying low-smoke zero-halogen (LSZH) materials.
【FAQ】
Q: What is the difference between HGYZ-AW715 and HGYY-TW712?
AW715 is a general-purpose flexible strip for a wide range of firestop applications. TW712 is specifically designed and tested for use inside UL1479 certified fire collar systems.
Q: Can AW715 be supplied with aluminum foil on one or both sides?
Both single-side and double-side foil coating are available. Please specify your requirement in your enquiry.
Q: Is this product suitable for use in fire collar manufacturing?
For collar applications requiring UL1479 documentation, we recommend HGYY-TW712. AW715 is recommended for applications where UL listing is not required.
[→ HGYY-TW712 – UL1479 fire collar strip]
[→ HGYY-A813 – Rigid intumescent strip]
[→ FEG40 Fire Collar – complete collar system]