B1 Fire Rated PU Foam is a single component, moisture curing, self-expanding, ready to use polyurethane foam with propellants which are completely harmless to ozone layer. It has a fire rating of up to 235 minutes in certain configurations. High quality PU straw foam recommended for sealing applications where fire resistance is required. It is designed for easy dispensing through the straw adapter included with each can.PropertiesAccording to EN 1366-4 fire retardant up to 235 min – see table enclosed. Efficient seal against smoke and gas. Does not contain CFC’s and H-CFC’s. Excellent adhesion & filling capacity. Excellent mounting capacity and stability. High yield up to 45 liters depending on temperature and humidity. Excellent adhesion on most substrates (except Teflon, PE and PP). High filling capacity. High thermal & acoustical insulation value. After cured, it can be painted, cut, trimmed. No shrinkage. Mould and water resistant. Conforms to fire class B1 (DIN 4102). Conforms to French A+. Conforms to the requirements of VOC content specifications in LEED credit EQc4.1 “Lowemitting products” of SCAQMD rule 1168.Application AreasAll applications where fire retardant properties are required such as:Installation of door and window frames. Filling and sealing gaps, joints and cavities. Filling of penetrations in walls. Heat insulation of roof construction. Sealing of cable and pipe penetrations. Soundproofing and sealing partition walls. Bonding of insulation materials. Multi-Purpose, adhesion and fixation.Technical Specification:Basis: Polyurethane PrepolymerCuring System: Moisture cureSpecific Gravity: 22±3 Kg/cm³ (ASTM D1622)Tack-Free Time (1 cm width): 7±3 min (ASTM C1620)Cutting Time (1cm width): 30-45 min (ASTM C1620)Cure-Time: 24 hoursFoam Colour: GreyYield: 30-45 L (ASTM C1536)Shrinkage: 0 %Fire Class of the Cured Foam: B1 (DIN 4102)Thermal Conductivity: 0,036 W/m.k (at 20°C) (DIN 52612)Compression Strength: 0,03 MPa (DIN 53421)Water Absorption: Max. 1 vol% (DIN 53428)Temperature Resistance: -40°C to +90°CApplication Temperature: +5°C to +30°CCan Temperature: +5°C to +30°C