Product Description
3M™ Fire Barrier Moldable Putty Stix MP+ is a one-part, ready-to-use, intumescent firestop putty stick specifically designed to seal cables, conduits, and blank openings in fire-rated floors and walls. Its non-hardening, flexible composition allows for quick and easy hand application while providing up to 4 hours of fire protection according to ASTM E814 (UL 1479), CAN/ULC-S115, and ASTM E1966 (UL 2079). This moldable putty remains re-enterable for future modifications and offers excellent adhesion and long-lasting performance.
Key Benefits
- Up to 4 Hour Firestop: Tested in accordance with ASTM E814 (UL 1479) and CAN/ULC-S115.
- Flexible and Moldable: Easily conforms to complex cable and conduit configurations.
- Non-Hardening: Remains pliable for future modifications and re-entry.
- Smoke and Sound Barrier: Provides draft and smoke seal as well as sound attenuation.
- Excellent Adhesion: Sticks to cables, conduit, concrete, metal, plastic, and other substrates.
- STC Rating: Up to 53 in a 6″ Steel Stud Wall assembly.
- Convenient Packaging: Stick form for easy, hand-applied firestop sealing with no special tools required.
Best For
- Blank openings
- Cable penetrations
- Conduit penetrations
- Irregular-shaped openings
- Small diameter service penetrations
- Re-enterable firestop applications
Product Properties
| Property | Specification |
|---|---|
| Application | Commercial Construction |
| Brand | 3M™ |
| Case Quantity | 6 Bags per Case, 12 Bags per Case |
| Expansion Temperature | 350 °F |
| Expansion Type | Intumescent |
| Fire Rating | Up to 4 Hours |
| Material | Putty |
| Maximum Service Temperature | 180 °F |
| Minimum Application Temperature | 40 °F |
| Product Color | Red |
| Product Form | Putty Stick |
| Product Type | Putty Stick |
| STC Rating | Up to 53 in a 6″ Steel Stud Wall |
| Smoke Seal | Yes |
| Water-tight | No |
