3M Fire Barrier Water Tight Sealants achieve the benefits of firestopping and a water tight seal in one application,
and offer the following benefits:

• Meet UL Water Leakage Test, W-rating — Class 1 requirements for systems tested and listed in accordance with ANSI/UL 1479
• Provide excellent adhesion on most construction surfaces, including: concrete, gypsum, metal, plastic (CPVC compatible),wood and insulation
• Ideal for the following interior construction voids: blank openings, metallic pipes, non-metallic pipes, cables, cable trays, insulated pipes, busways, HVAC vents and ducts, combos and bottom of wall construction joints
• Low VOC*

High-performance intumescent silicone achieves the benefits of a firestop and watertight seal.

• Up to 4-hour fire ratings per ASTM E 814 (UL 1479)
• Excellent weatherability — ideal for fast-track construction
• Cures upon exposure to atmospheric humidity
• Re-enterable and repairable
• Fungi-resistant per ASTM G 21