3M™ Fire Barrier Water Tight Sealant 3000 WT Intumescent Sealant forms an effective barrier to fire and water in through penetrations. This high-performance sealant helps prevent water and moisture intrusion while protecting buildingsand their occupants by preventing the spread of fire, smoke and toxic gas.
- Intumescent silicone for use in systems with a firestop rating up to 4 hours when tested in accordance with ASTM E 814 (UL1479)
- Meets UL Water Leakage Test, W Rating: Class 1 requirements for systems tested in accordance with ANSI/UL 1479
- Helps prevent moisture and water migration through a building
- Minimizes noise transfer: STC-rating of 53 when tested in STC 54-rated wall assembly
- Excellent weathering properties
- Ideal for fast-track construction
- Easy application with standard caulking gun or pneumatic pump
- Excellent bonding
- Gray color with black flecks