Description
Product Description
BOSS 139 Firestop Sealant is a high-quality intumescent one-part firestop sealant designed to provide reliable fire, smoke, and gas protection in walls, floors, and ceilings. When exposed to fire, it expands to form a char, effectively sealing gaps and joints.
Features:
- One-part intumescent sealant, ready-to-use
- Expands under heat to block fire, smoke, and gases
- Excellent adhesion to concrete, brick, metal, and wood
- UL Classified & tested to ASTM E-814 / UL 1479 standards
- Easy to apply with standard caulking tools
- Suitable for interior and exterior applications
Typical Applications:
- Sealing pipe, cable, and duct penetrations
- Firestopping construction and expansion joints
- Residential, commercial, and industrial buildings
- Walls, floors, and ceiling penetrations
- HVAC and plumbing openings
Product Specification
| Brand | Boss Product |
| Specific Gravity | 1.85 G |
| Working Time | 15 min |
| Application Temperature | 40-110 Degree F |
| Minimum Order Quantity | 24 Unit |
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