Designed to prevent the spread of fire, smoke and noxious gas, 3M™ fire barrier sealant IC 15WB+ is a one part, gun grade, latex based, intumescent firestop sealant. This firestop sealant provides up to three hour fire protection in accordance with ASTM E 814 (UL 1479) and CAN/ULC S115. In addition, this product is fire-resistance tested for static construction joint systems in accordance with ASTM E 1966 (UL 2079). This sealant has been formulated to form a monolithic firestop seal that also helps minimize sound transfer, acting as a barrier to airborne sound transmission (STC-Rating of 54 when tested in a STC 54-rated wall assembly).Recommended applications HVAC ducts and vents metallic and non-metallic, including CPVC pipes blank openings single and bundled cables insulated pipe. Pipe and cable through-penetrations busways combos rated wall, floor and floor ceiling assemblies static construction joints formulated for protection and ready for Inspection3M™ fire barrier sealant IC 15WB+ is formulated to be easily cleaned-up with water. This sealant is paintable, as well as re-enterable and repairable. It is a halogen-free sealant that features exceptional adhesion, excellent caulk rate and sag-resistance. In addition, inspectors can instantly recognize 3M™ fire barrier sealant IC 15WB+ by its distinctive yellow color. 3M™ fire barrier sealant IC 15WB+ firestops through-penetrations passing through fire-rated floor, floor/ceiling or wall assemblies, as well as other fire-rated interior building partitions and assemblies (e.g. Static construction joints or blank openings). In addition, the unique intumescent property of this material allows 3M™ fire barrier sealant IC 15WB+ to expand and help maintain a firestop penetration seal for up to 3 hours of fire exposure. 3M™ fire barrier sealant IC 15WB+ bonds to most construction substrates, including: gypsum wallboard, concrete, metals, wood, plastic and cable jacketing. This sealant meets the intent of LEED® VOC environmental regulations, international building code (IBC) and other key life safety building code requirements. Reliable and affordable fire protection. Effective and easy to install, 3M™ fire barrier sealant IC 15WB+ is part of the 3M™ family of fire protection products that offer the broadest, long-lasting solutions for a variety of commercial, industrial and residential applications. As a trusted leader in the fire protection industry, 3M™ offers a broad line of affordable products designed to meet the most demanding firestop requirements. Find the solution you need from the industry preferred line of fire protection products.