EN 45545-2 · Hazard Level HL3

Flame retardant rubber, engineered to pass the test — not just the spec.

EN 45545-2 HL3 flame retardant and fire retardant rubber compounds and profiles for railway, metro and transit — low flame spread, low smoke density and minimal gas toxicity. Formulated and FST-validated in-house in Porbandar, Gujarat.

HL3 Highest EN 45545-2 tier
≥32% Limiting oxygen index
04 Material programmes
24h Quote turnaround
01 Product Range

Four material programmes, one standard of discipline.

HL3 fire-retardant rubber at the core, backed by rubber, gypsum and edible oil supply — each shipped to the exact grade quoted.

HL3 flame retardant rubber profiles for railway and transit
Flagship · EN 45545-2 HL3 01 / 04

HL3 Fire-Retardant Rubber

Compliant compounds and profiles for rail and transit — validated for flame, smoke and toxicity before a single profile is moulded.

StandardEN 45545-2 HL3
Oxygen Index≥ 32 %
Read specification
02 / 04

Rubber

Industrial and export-grade compounds for moulding and manufacturing applications.

GradeIndustrial
FormSheet / Block
Read more
03 / 03

Gypsum

Fine gypsum powder and lump for construction, ceramics and plaster manufacturing.

Purity99.2 %
Mesh Size200
Read more
02 Why Manufacturers Work With Us
QA

Tested every batch

Grading and FST checks before anything leaves the facility — the batch matches the certificate.

SUP

Committed delivery windows

Production planned around firm dates, not best-effort timelines.

SPEC

Built to your formula

Compounds tuned to the standard your application actually has to clear.

DIR

Talk to the people making it

A direct line to the plant, not a sales layer in between.

03 Industries Served
Railway & Transit Construction Ceramics Paint & Coatings Rubber Manufacturing Chemical
04 Flame Retardant Rubber

Flame retardant rubber built for fire safety-critical applications

A trusted flame retardant rubber manufacturer supplying EN 45545-2 HL3 compounds, profiles and industrial rubber components across India and export markets.

Flame retardant rubber is engineered to resist ignition, slow flame spread and release far less smoke and toxic gas than standard rubber when exposed to fire. At Elements India we formulate flame retardant rubber to the most demanding fire-safety tier — EN 45545-2 Hazard Level HL3 — so it can be specified with confidence for railway, metro and transit environments where passenger survival time depends on how materials behave in a fire.

Our flame retardant rubber products are compounded from EPDM, Silicone and Neoprene bases and validated in-house for flame spread, smoke density (Ds) and gas toxicity (CIT) before a single profile is moulded. This is the same discipline behind our HL3 rubber and industrial rubber programmes — every batch is tested against the agreed specification, and nothing ships unless it matches the certificate.

Because it is fire retardant rubber rather than a generic grade, the material carries a limiting oxygen index of 32% or higher, self-extinguishes quickly and stays within strict toxicity limits. That makes our flame resistant rubber suitable for window and door seals, gangway bellows, anti-vibration mounts, cable grommets and rail pads — the fire safety rubber components rolling-stock builders and transit authorities rely on.

Whether you need EN 45545-2 rubber to a proven profile or a custom flame retardant formulation for a new application, we work directly from your specification. Explore our HL3 fire retardant rubber, browse the full product range, or request a quote — we reply within one business day.

05 Frequently Asked Questions

Flame retardant rubber — frequently asked questions

What is flame retardant rubber?

Flame retardant rubber is a rubber compound engineered with flame retardants, smoke suppressants and char-forming additives so it resists ignition, slows flame spread and releases minimal smoke and toxic gas. Elements India manufactures flame retardant rubber to the EN 45545-2 HL3 standard for railway and transit use.

Is flame retardant rubber the same as fire retardant rubber?

In practice the terms flame retardant rubber, fire retardant rubber and flame resistant rubber are used interchangeably. All describe a rubber compound designed to withstand fire, limit flame spread and reduce smoke and toxic emissions rather than a standard rubber that burns freely.

What is HL3 rubber under EN 45545-2?

HL3 (Hazard Level 3) is the most stringent fire-safety classification in the EN 45545-2 standard for railway vehicles. HL3 rubber is required for underground metros, tunnels and high-capacity transit corridors where fire risk to passengers is highest. See our HL3 fire retardant rubber page for full specifications.

Where is flame retardant rubber used?

Flame retardant rubber products are used in railway and metro rolling stock — window and door seals, gangway and bellows seals, anti-vibration mounts, cable grommets and rail pads — and in any industrial rubber component where fire safety is critical.

Send a specification

Have a spec in mind? We'll quote it within one business day.

Tell us the standard, grade and quantity — we'll come back with price and lead time.