PUF Slabs PUF slabs are the most economical thermal insulation rigid Polyurethane Foam Materials for various applications in building and all types of industries. 'K' values of these materials are the lowest of all the Thermal Insulating materials,. PUF slabs also available with craft paper or aluminium foil lamination. Technical Specification for Slab 1. Density : 36 ± 4 Kgs/m3 2. Compressive Strength at 10% deformation : 1.5 -2 Kgs/cm2 3. Thermal Conductivity : 0.016 - 0.017 W/moC 4. Dimensional Stability (Linear Change) : <2% 5. Closed Cell Content : >92% to 95% 6. Working Temperature : -180oC to +140oC 7. Water Vapour Permeability : 1.6 - 2.0 per ms/inch Rigid PU Foam 50 mm K-Value - 0.017 - 0.019 W/MoC Expanded Polystyrene 80 mm K-Value - 0.032 - 0.037 W/MoC Mineral Wool 90 mm K-Value - 0.034 - 0.037 W/MoC Cork 100 mm K-Value - 0.038 - 0.043 W/MoC   Plot 8, Phase II, Kasba Industrial Estate, Kolkata - 700 107 Phone: (033) 2443 0936 / 0937, 0068, Fax : (033) 2443 1176 e-mail : duroplas@cal2.vsnl.net.in, info@unifixplast.in, Website : www.unifixplast.in