- Product Type:Waterborne Sealant
- Application Area:FSK Jackets, FRK Jackets, All Service Jackets (ASJ), Air Ducts, Lap Sealing, AC Ducts, Joints, Board Facings
- Compatible Substrates & Surfaces:Steel, Aluminum, Galvanized Steel, Metal
- Application Method:Brush, Trowel
- Features:Fire-Resistant, Flexible, Durable, Odorless, Water-based
Foster® Air-Tight™ FDS-181 Duct Sealant is a fire-resistant, fibrate, water-based sealant designed for use on indoor or outdoor low, medium, and high-velocity heating and air conditioning ducts. It serves as a robust and flexible adhesive and sealant, creating a durable seal to prevent air leakage on the faced duct board, flex duct, galvanized aluminum, and stainless steel metal ducts.