ArmaFlex Class ‘O’ is a highly flexible, closed-cell Nitrile rubber Insulation material with high water vapor diffusion resistance and low thermal conductivity. It prevents condensation, reduces energy losses and protects against condensation on pipes, air ducts, and vessels. ArmaFlex Class ‘0’ tested as per BS 476 Part 6 & 7 and suitable for hot water services, chilled water lines, heating systems, air conditioning ductwork, refrigerated pipework, process, and industrial pipework and equipment. ArmaFlex Class ‘O’ is FM Approved product offering from Armacell India Pvt. Ltd. ArmaFlex Class O has excellent technical parameters like low thermal conductivity [λ0°C ≤ 0.035 W/(m∙K)] and high water vapor diffusion resistance (µ ≥ 7,000). ArmaFlex Class O gives increased long-term thermal efficiency due to its closed cell structure which has long-term protection against condensation. ArmaFlex Class O is available in sheets and tubes.