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HL3 Fire Retardant

Gayatri Minerals / HL3 Fire Retardant
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HL3 fire retardant profiles for railway and metro applications
HL3
Fire Retardant
EN 45545-2
Certified Standard
For HL3 Queries

Gayatri Minerals, 359, GIDC, Porbandar: 360575, Gujarat
gayatriminerals.gm@gmail.com
+91 98259 19197 / +91 98794 54515

HL3 Compliant
EN 45545-2 Fire Retardant

India's trusted HL3 compliant EPDM / Silicone manufacturer — certified to the most stringent fire-protection standard for railway vehicles. Precision-compounded fire retardant profiles and compounds are engineered to protect lives across India's rail network and global transit infrastructure.

In mass transit and railway engineering, compromise is never an option. EN 45545-2 governs the fire protection behaviour of every material and component inside a railway vehicle. HL3 — Hazard Level 3 — is the most stringent tier, mandatory for trains operating in extended underground tunnels, sleeping cars, and high-capacity transit corridors where evacuation time is longest.

Standard EN 45545-2 : 2020 · HL3
Oxygen Index ≥ 32% (Exceeds HL3)
Smoke Density Tunnel Compliant
Toxicity (CITg) Below Max Threshold
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Why It Matters

Why HL3 EN 45545-2 Compliance Matters

As a certified HL3 compliant EPDM / Silicone manufacturer, Gayatri Minerals supplies fire retardant compounds and extruded profiles that meet procurement requirements for Indian Railways, metro systems, and global rolling stock integrators.

Low Flame Spread

Strictly restricts fire propagation across the material surface, containing the source before it can cascade into a life-threatening blaze.

Low Smoke Density

Dramatically reduces smoke emission to keep evacuation corridors and emergency exits visible during critical seconds.

Minimal Gas Toxicity

Prevents the release of lethal halogenated and acid gases during combustion — critical in enclosed underground environments.

Highest Safety Tier

HL3 sits at the apex of the EN 45545-2 framework — the benchmark that safety-critical railway procurement now demands globally.

Test Data

Technical Specifications & Performance Data

Our compounds are custom-formulated in EPDM, Silicone, and Neoprene, balancing mechanical durability with HL3 compliant fire retardant properties — every batch validated in-house against EN 45545-2 HL3 requirements.

PropertyTest StandardPerformanceStatus
Oxygen Index (OI)ISO 4589-2≥ 32% (Exceeds HL3 limit)PASS
Smoke Density (Ds max)ISO 5659-2Compliant with critical tunnel limitsPASS
Toxicity Index (CITg)NF X 70-100-1/-2Well below maximum allowable thresholdPASS
Hardness RangeShore A50 to 85 (Fully customizable)PASS
Temperature ResistanceContinuous OperationOptimized for severe climate variationsPASS
Tensile StrengthISO 37Meets full mechanical duty requirementsPASS
Halogen ContentEN 14582Halogen-free compound availablePASS
HL3 Technical Data Sheet
Applications

Applications in Rail & Transit

Our railway fire retardant components and fire resistant profiles are engineered for interior, exterior, and structural applications across high-speed trains, metro systems, locomotives, and light-rail vehicles — fully certified to EN 45545-2 HL3.

Window & Door Seals
Airtight, weatherproof, and fire-safe sealing profiles for all rolling stock door and window systems.
Gangway & Bellow Seals
Flexible, high-fatigue resistant connecting joints between railway coaches and metro cars.
Anti-Vibration Mounts
Noise, vibration & harshness damping elements that absorb shock without compromising fire safety.
Cable Grommets & Insulation
Protecting critical electrical conduits from fire spread across the entire train body.
Rail Pads & Under-Sleeper Pads
Load-bearing fire-retardant pads meeting RDSO specifications for Indian Railways track infrastructure.
Custom Extruded Profiles
Bespoke HL3 fire retardant profiles and molded components machined to your exact tolerances.
Get In Touch

Partner With Railway Fire Retardant Experts

Email

Request technical datasheets, test certificates, or a quote from our engineering team.

gayatriminerals.gm@gmail.com
Phone / Head Office

Gayatri Minerals, 359, GIDC, Porbandar: 360575, Gujarat

+91 98259 19197 / +91 98794 54515
Request Quote / Contact Our Engineers