Product Description
3M™ Fire Barrier Water Tight Sealant 1000 NS is a non-slump, one-part silicone firestop sealant designed to provide up to 4 hours of fire protection for through penetrations and construction joints. Its neutral-cure formula allows for excellent flexibility, water-tight sealing, UV resistance, and long-term durability under both interior and exterior conditions. This versatile sealant is easy to apply in both vertical and overhead applications where self-leveling sealants would not be practical.
Key Benefits
- Up to 4 Hour Firestop: Fire-resistance tested for penetrations and joints per ASTM E814 (UL 1479), ASTM E1966 (UL 2079), and CAN/ULC-S115.
- Non-Slump Formula: Ideal for vertical or overhead applications where self-leveling sealants are not appropriate.
- Water-Tight Seal: Helps prevent water passage in addition to firestop performance.
- Durable Flexibility: ±25% movement capability accommodates structural movement and expansion.
- Excellent Weatherability: UV-resistant for long-term durability in exposed applications.
- Excellent Adhesion: Bonds to a variety of construction substrates without priming.
- Easy Application: One-part neutral-cure silicone for simple application with conventional caulking equipment.
Best For
- Vertical wall joints
- Overhead applications
- Blank openings
- Through penetrations
- Metallic and non-metallic pipe penetrations
- Mechanical and electrical service penetrations
Product Properties
| Property | Specification |
|---|---|
| Application | Commercial Construction |
| Brand | 3M™ |
| Case Quantity | 10 Bags per Case |
| Composition | Silicone |
| Container Size (Imperial) | 4.5 Gal, 20 fl oz, 10.1 fl oz, 29 fl oz |
| Container Size (Metric) | 19 Liter, 591 mL, 300 mL, 857 mL |
| Fire Rating | Up to 4 Hours |
| Joint Fire Resistance Time | Up to 4 Hours |
| Material | Silicone |
| Maximum Service Temperature | 302 °F |
| Minimum Application Temperature | 40 °F |
| Storage Temperature | 40 °F to 90 °F |
| Movement Capability | ±25% |
| Product Form | Cartridge, Drum |
| Product Type | Sealant |
| Product Color | Light Gray |
| STC Rating | Up to 56 in a 6″ Steel Stud Wall |
| Smoke Development Index | 5 |
| Smoke Seal | Yes |
| Water-tight | Yes |
