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  • 3M™ Polyurethane Adhesive Sealant 540
  • 3M™ Polyurethane Adhesive Sealant 540

    18  Products
    • Multi-purpose bonding and long lasting seals
    • Permanently elastic to allow joint movement
    • 60-90 skin time; paintable, once skin forms
    • Good UV resistance
    Volume (Metric)
    18 Products Available
     Volume (Metric)
    All Models
    • Multi-purpose bonding and long lasting seals
    • Permanently elastic to allow joint movement
    • 60-90 skin time; paintable, once skin forms
    • Good UV resistance
    • One component, moisture-curing sealant simplifies production
    • Bonds dissimilar materials for increased design flexibility
    • Gap filling capability

    3M™ Polyurethane Adhesive Sealant 540 is an all-purpose, single-component, moisture-curing, gap-filling polyurethane adhesive that creates permanently elastic seals and bonds in a wide variety of service environments.

    Multi-Purpose Sealant with Good UV Resistance 3M™ Polyurethane Adhesive Sealant 540 is a single-component, moisture-curing, polyurethane sealant used to bond a wide variety of materials, including plastics, fiberglass reinforced plastic (FRP), sheet molding compound (SMC), aluminum, steel, coated metal and wood. It exhibits high tensile strength, good UV resistance, low Shore A hardness and low modulus to maintain its functionality in a wide range of extreme service environments. Available in cartridge, sausage pack, pail and drum volumes to meet your application needs. Recommended Applications Vertical and horizontal panel bonding and joint sealing Aluminum curtain walls and storefronts Transportation manufacturing (bus, rail, truck, trailer) Replacement of mechanical fasteners in many situations Paintable after Skin Forms for Improved Appearance 3M™ Polyurethane Adhesive Sealant 540 offers an alternative to mechanical fasteners and can replace rivets in some applications. It will bond dissimilar substrates and a wide selection of materials. This adhesive will perform in temperatures ranging from -40°F/-40°C to 194°F/90°C. Once skin forms (60-90 minutes), the sealant can be painted to improve the final finish. Understanding Polyurethane Sealants Polyurethane sealants provide strong, flexible durable elastomeric bonds that seal against the elements. These sealants excel in challenging industrial, transportation and construction applications. Polyurethane sealants are available in a wide variety of Shore A hardness, open time and colors to meet many application needs. Choose a 3M Manual or Pneumatic Applicator for dispensing 3M adhesives sealant cartridges and 400ml/600ml sausage packs. Bringing Better Ideas to the Surface through Science and Innovation In our 3M Industrial Adhesives and Tapes Division, we apply the science of adhesion to deliver innovative solutions that improve the design and manufacturing processes of companies around the world. In the end, our technologies help customers like you deliver competitive products to the market faster and more efficiently.

    Adhesive Type
    Air Barrier
    Application Method
    Hand or pressure caulk, Liquid
    Application Temperature From (Celsius)
    5 Degree Celsius
    Application Temperature To (Celsius)
    35 Degree Celsius
    Consumer Label
    Full Cure Time
    >3 mm/24 hr
    40 Shore A
    Construction, General Industrial, Transportation
    Maximum Operating Temperature (Celsius)
    90 Degree Celsius
    Modulus at 100%
    58 Pound-Force Per Square Inch
    Physical Form
    Medium paste
    Product Form
    Cartridge, Gallon, Pack, Package, Sausage
    Product Type
    Flashing Accessory, Sealant
    Solids Weight Percent (Approximate)
    90 Percent
    Tack-free Time
    1 Hour
    Volume (Imperial)
    10.14 fl oz, 10.5 fl oz, 13.526 fl oz, 13.53 fl oz, 5 gal, 50 gal
    Volume (Metric)
    300 mL, 310.52 mL, 400 mL, 600 mL
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