The 3M Fire Barrier Water Tight Sealant 1000 NS is a ready-to-use, single component, neutral cure, silicone sealant that cures upon exposure to atmospheric humidity to form a flexible firestop seal. The water tight sealants help control the spread of fire, smoke and noxious gases before, during and after exposure to fire.

• Meets UL Water Leakage Test, W Rating (Class 1 requirements)
• Firestop tested up to 3 hours in accordance with ASTM E 814 (UL 1479) and CAN/ULC S115
• Offers compression and extension capability of ±31% for dynamic and static construction joints
• Fire resistance tested for construction joint (including curtain wall) systems in accordance with ASTM E 1966 (UL 2079), ASTM E 2307
• Excellent caulk rate and sealant can be applied with conventional caulking equipment
• Non-slump, halogen-free formula provides strong adhesion
• Exceptional weatherability for durability during construction
• Minimizes noise transfer (STC-Rating of 56 when tested in STC 56-rated wall assembly)
• Formulated as a re-enterable and repairable solution
• Sealant is paintable with primer.

Specifications

• Size: 10.1 Oz
• Color: Light Gray
• Product Type: Sealant
• Smoke Seal: Yes.