Class O Armaflex Selfseal is a thermal insulation and lagging product fully slit along each length with two strips of double sided self adhesive tape pre-applied to each open slit surface. Specially developed to provide insulation where fast, secure installation is required and ideal for applications where working space is severely restricted, Class O Armaflex Selfseal insulation and lagging is easily applied by fitting the insulation and peeling back the self adhesive tape.

Class O Armaflex Selfseal insulation and lagging has a closed cell structure with an "in-built" vapour barrier, offering it a high resistance to water vapour transmission, reducing the condensation risk and helping to increase the product life cycle.