Intumescent Strips – Graphite-Based Passive Fire Protection
FireEG manufactures a complete range of halogen-free, graphite-based intumescent strips for passive fire protection — from UL1479 certified fire collar systems to fire door and window sealing assemblies.
All products are free of halogens, asbestos, and heavy metals. Manufactured at our facility in Hebei, China since 1993. OEM and custom dimensions available.
Intumescent Strip for
UL1479 Fire Collars
HGYY-TW712 | 20x expansion | Up to 10,000mm rolls
Halogen-Free Flexible Intumescent Strip
HGYZ-AW715 | 18x expansion | Up to 2,100mm width For plastic pipes, ventilation ducts, open cavities
Halogen-Free Rigid Intumescent Strip
HGYY-A813 | 20x expansion | Aluminum foil coating available For open cavities, concealed sockets, structural gaps
Intumescent Strip for Fire Doors & Windows
HGYY-BW710 | 27x expansion | Thickness from 1mm Engineered for narrow gap sealing in door and window assemblies
Core Technology: Low-Temperature Intumescent Graphite
All FireEG intumescent strips are based on halogen-free expandable graphite technology. When exposed to heat above 180°C, the graphite compound undergoes rapid volumetric expansion, forming a dense carbonaceous char layer that seals gaps, blocks smoke and flame passage, and insulates adjacent materials from heat transfer.
Compared to intumescent materials based on sodium silicate or ammonium polyphosphate alone, graphite-based strips provide: – Higher expansion pressure under confinement – Stable performance across a wide temperature range – No halogen release — no toxic HCl or HBr gas generation – Long-term dimensional stability without moisture absorption
Through-Penetration Firestopping
Used inside intumescent fire collars to seal combustible plastic pipe penetrations through concrete floors and walls per UL1479.
Fire Door & Window Sealing
Installed in door leaf rebates or frame grooves to seal gaps against smoke and flame during a fire event.
Ventilation Duct & Open Cavity Sealing
Flexible and rigid grades for fireproof sealing of ductwork penetrations, open cavities, and concealed service voids.