Aeroflex closed cell tube and sheet insulation is flexible closed cell and lightweight elastomeric material designed for insulating liquid cooling and heating lines,the closed cell structure of Aeroflex provides many advantage over most rigid insulation for coolingand heating lines: 1. Moisture & vapor resistance whthout using additional vapor barriers 2. Temperature range:-57C~157C,Stable thermal conductity 3. Outstanding ultravoilet and weather resistance.