Armaflex pipe insulation lagging tape. Made from Class O foam nitrile rubber, this tape is suitable for use with all Armaflex Class O insulation products. Insulating pipe and ductwork with insulation and tape is one of the most effective ways to protect the value of an investment. Aside from restricting energy losses, insulation also prevents condensation and the associated risks of pipe corrosion and mould growth. The Armacell range of thermal insulation materials is specifically designed to meet the challenges posed by modern mechanical services.Class O Armaflex is the flexible, closed cell, elastomeric, nitrile rubber insulation that offers reliable protection against condensation and effectively prevents energy loss. Class O Armaflex is dust free, fibre free and CFC free with an ODP of zero. Its inherent attributes and combination of properties makes Armaflex a highly efficient method of insulating hot and cold water services, chilled water lines, heating systems, air conditioning ductwork and refrigerated pipework for condensation control, energy conservation and frost protection.