A smoke and fire stopping sealant for wall and floor penetrations. Latex-based, easy-to-handle formulation bonds to concrete, metal, wood, and cable jacketing. Dries to a firm, rubber-like solid. During a fire, product expands to maintain a tight seal against smoke and flame for 4 hr. Typical applications: Metallic pipe, cable, nonmetallic pipe, insulated pipe, cable, cable tray, busway, and HVAC duct penetrations. Tested in accordance to: ASTM E814 (UL1479), ASTM E84 (UL723). Clean tools with soap and water. Red in color. 10.1 Fl. Oz cartridge. Continuous operating temperature not to exceed 120 deg. F (48 deg. C).