Flamebuster Fire Stop Caulk is a one-component, high-heat latex sealant engineered to block fire and smoke in non-rated wood or steel construction. Its red, flexible formula adheres to a variety of substrates—forming a durable, smoke-resistant barrier around pipes, wires, ducts and vents. Easy to apply with any standard caulking gun, it cures to a paintable finish for a clean, professional look.

Key Features

• Blocks fire and smoke migration
• High-temperature resistance
• One-component, pre-mixed latex formulation
• Easy application and tooling
• Flexible seal accommodates building movement
• Paintable finish

⚠️ WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.