Nuco Self-Seal GG-266 Intumescent Silicone Firestop - Red
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Self-Seal® GG-266 is a single-component, neutral cure, non-slumping intumescent silicone caulk that is designed to seal combustible service penetrations in fire-rated walls and floors. When exposed to temperatures above 150°C (300°F), it will begin to expand. As the combustible penetrating item softens and collapses under fire conditions, the silicone composition will rapidly intumesce to fill the void with a patented char composite that contains expanded graphite.
- Intumescent Silicone (expands when exposed to temperatures above 150°C (300°F))
- Self-Seal GG-266 has achieved GREENGUARD GOLD Certification
- Non-sag silicone
- Water-resistant before, during, and after cure
- Freeze-thaw stable
- Protects your wall & floor openings
- Tested at positive pressure to simulate the pressure differentials that can occur in a fire situation
- Self-Seal GG-266 seals combustible service penetrations in fire and smoke rated wall or floor separations.
Technical Specifications
| Skin Over Time (23°C, 50% RH), min | 10-30 |
| Expansion Volume | >6 times original volume (350°C) |
| ASTM E 84 - Surface Burning Characteristics | FSI=0, SD=27 |
| ASTM C 1299 - Service Temperature, °C | =-40 - 110 |
| ASTM D 149 - Dielectric Strength, kV/mm (V/mil) | Conductive |
| Tack free time (min) (25°C, 50% RH) | 20 - 40 |
| Specific Gravity (g/mL) | 1.25 |
| ASTM C 603 - Application Temperature, °C | =-29 - 50 |
| ASTM G21 - Fungal Resistance | Rating 0, no growth |
Product Dimensions
| Volume | 300 mL |
