NuFlex® 136 Draft Stop is a one-component, non-combustible caulk. It meets the requirements of ASTM E-136 and is designed to resist high temperatures and smoke in non-rated construction. NuFlex® 136 is for use in annular spaces around wires, pipes, ducts, and vents in wood or steel framed non-rated construction. It is a gunnable caulk that cures to a brick-hard solid. THIS PRODUCT HAS NOT BEEN TESTED FOR AND IS NOT TO BE USED AS A FIRESTOPPING MATERIAL IN RATED CONSTRUCTION. Products tested to ASTM E-814 (UL 1479) are required for this purpose. Consult your distributor for information on our ASTM E-814 (UL 1479) Self Seal™ Firestopping Products. Features: Withstands temperatures up to 750°C (1,380°F) Red for ease of inspection Excellent adhesion to wood and steel Non-flexible once cured Bonds to: Wood Steel Masonry Basic uses include: Sealing around stovepipes, vents, ducts, and much more in non-rated construction
