Product Data Sheet

3M™ Polyurethane Adhesive Sealant 550FC is a moisture-curing sealant that forms flexible, weather-resistant bonds. This single-component adhesive bonds dissimilar materials including plastics, sheet molding compound, aluminum, steel, coated metal, stone, and wood in temperatures ranging from -40 °F (-40 °C) to 194 °F (90 °C). Polyurethane sealants perform well in challenging industrial, transportation, and construction settings by creating durable elastomeric bonds that seal against the elements. To keep the job moving, this fast-curing formula forms a paintable skin in only 60-90 minutes. High tensile strength, weather-resistance, and short cure time allow 3M™ Polyurethane Adhesive Sealant 550FC to excel in applications such as exterior panel bonding, window framing, and marine manufacturing.

Recommended Applications

• Marine deck to hull bonding
• Vertical and horizontal expansion joint applications
• Concrete and masonry control joints
• Aluminum curtain wall and storefronts
• Door and window frame perimeters

Product Features

• One component (moisture cure) has no mixing and simplifies production
• Bonds dissimilar materials for design flexibility
• Adheres to wide variety of substrates
• Permanently elastic
• Fast curing
• Paintable after cure to improve product finish
• High tensile strength for fastener replacement
• High modulus/shore A hardness designed for stronger bonds