3M 1000 NS 20 Oz. Fire Barrier Water Tight Sealant (Pack of 1)
- TESTED AND LISTED: For up to 3-hours in accordance with ASTM E814 (UL 1479), ASTM E1966 (UL 2079) and CAN/ULC S115.
- FORMS AN EFFECTIVE WATER BARRIER: Meets the UL Water Leakage Test achieving a Class 1 W Rating in accordance with ANSI/UL 1479.
- ONE-PART, NON-SLUMP SILICONE SEALANT: For use in both through- penetration and construction joint applications—cures to form a flexible seal.
- WITHSTANDS CONSTRUCTION CONDITIONS: Durable sealant provides excellent weatherability during construction.
- EASILY RE-ENTERABLE: Formulated as a re-enterable and repairable fire barrier solution.
- PRIMER PAINT READY: Sealant is paintable with primer.