Fire‑safety specifications represented by EN45545‑2 are setting higher thresholds for rubber and elastomer materials used inside rolling stock. Modern metro and EMU vehicles demand low‑smoke, low‑toxicity and flame‑retardant performance for all polymer parts, including damping mounts, sealing gaskets and anti‑vibration bushes.

Ordinary natural rubber formulations struggle to pass tough fire‑risk tests. Material developers keep optimizing modified EPDM and special blended rubber compounds to balance flame resistance, mechanical elasticity and fatigue performance. Many high‑tech material enterprises invest extra resources to complete third‑party fire‑safety certification.

Certified elastomer solutions are essential both for domestic new vehicle projects and cross‑border rail equipment export. Suppliers without compliant material systems will gradually lose access to mainstream rail‑vehicle bidding opportunities.