Flexible closed cell rubber insulation, Kaiflex ST Class O reliably prevents condensation and reduces energy loss. By incorporating a water vapour barrier into the insulation cell structure Kaiflex ST Class O can effectively eliminate water vapour migration and retain outstanding performance over the entire system life. Available in tube, coils and sheets for use on air-conditioning, refrigeration, chilled water, heating and hot water pipes and airdistribution ductwork, Kaiflex ST Class O is versatile insulation with consistent and reliable technical values. In addition to preventing condensation and saving energy, Kaiflex ST also performs an acoustic function, absorbing sound and dampening duct wall vibration. With inherent anti-microbial resistance as standard, and a Class O fire rated, closed cell rubber that is completely dust and fibre free, Kaiflex ST Class O can be used in any kind of public, commercial or industrial building without impacting on health or the quality of air.