NH/ArmaFlex is a halogen-free, flexible closed-cell elastomeric foam insulation material that is certified for use in marine and railway applications as well as special building types. It provides excellent water vapour diffusion resistance for long-term thermal stability in heating, ventilation and air-conditioning (HVAC) applications and does not contain halogens such as chloride and bromide. NH/ArmaFlex provides insulation of pipes, ducts and vessels of air-conditioning, refrigeration and process equipment to prevent condensation and saves energy.