High-performance intumescent silicone achieves the benefits of a firestop and watertight seal.

• Up to 4-hour fire ratings per ASTM E 814 (UL 1479)
• Excellent weatherability — ideal for fast-track construction
• Cures upon exposure to atmospheric humidity
• Re-enterable and repairable
• Fungal growth inhibited in the product per ASTM G 21