Armaflex® Rail ZH & ZH-C

Armaflex® Rail ZH & ZH-C halogen free sponge is the world’s first flexible closed cell insulation to meet EN45545-2 fire protection requirements. It is the leading and most innovative closed cell thermal insulation available to the railway industry worldwide and comes complete with a built-in vapour barrier reducing the risk of corrosion under insulation (CUI). Armaflex® Rail ZH & ZH-C has been developed to produce extremely low smoke density and reduce the risk of mold and mildew contributing to an improved indoor air quality.


  • Insulation/protection for air-conditioning and refrigeration air ducts and pipes (including elbows, fittings, flanges etc.) to prevent condensation

Armaflex® Rail halogen free sponge comes in two grades; either standard ZH or ZH-C which is the standard ZH material but with a silver metallic look coating.

Armaflex® Rail ZH:

  • Available in tubes, plain and self-adhesive sheets, and self-adhesive tapes
  • Protective halogen free insulation to reduce corrosive effects and smoke toxicity in case of a fire
  • Low smoke density, superior fire behaviour
  • Extremely low smoke density and superior fire behaviour
  • Low thermal conductivity, high tech insulation with built-in fire protection for railway vehicles
  • Complies with international railway standard for insulation material EN45545-HL2, R1

Armaflex® Rail ZH-C:

  • Available in pre-covered tubes, pre-covered self-adhesive sheets, and self-adhesive tapes
  • Halogen free insulation reduces toxicity and corrosive effects on people and equipment in case of fire
  • Resistant to UV, salt water and chemicals
  • Wash down waterproof and easy to clean
  • Factory applied reinforced coating with silver finish for hygiene area requirements
  • Complies with international railway standard for insulation material EN45545-HL3, R1

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