• Description for 3M Adhesive Sealant 540

    Polyurethane • Moisture cures rapidly to flexible seal/bond for many plastics, metal, wood, and more • 250 psi tensile strength

    *See Terms of Use Below

    Application Type Seal, Adhesive
    1 Part or 2 Part 1 Part
    Material Form Medium paste
    Substrate Acrylic, Metal, ABS, EPDM, Fir, Fiberglass , FRP, Plastic, Wood, PolyEthylene
    Chemistry Polyurethane, Methyl ethyl ketone (MEK)
    Cure Method Moisture
    Cure Temperature (°C) 23
    Cure Time (min) 1,440, Fast
    Viscosity (cPs) Non-sag
    Color Black, Gray, White
    High Temperature Resistance (°C) 90
    Low Temperature Resistance (°C) -40
  • Technical Data

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  • Best Practices

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  • Comparable Materials

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Cure Temperature Test Methods
Cure Temperature Cure Time Test Method
23°C Rate of Cure @ 73°F and 50% Relative Humidity, 1/8" (3 mm) per 24 hour
Cure Time Test Methods
Cure Time Test Method
1,440 min Rate of Cure @ 73°F and 50% Relative Humidity, 1/8" (3 mm) per 24 hour
Tack Free Time Test Methods
Tack Free Time Tack Free Temperature Test Method
60 to 90 min 23°C Tack-Free Time @ 73°F and 50% Relative Humidity
Tensile Strength Test Methods
Tensile Strength Test Method
300 psi ASTM D412
Elongation Test Methods
Elongation Test Method
>600 % ASTM D412
Modulus Test Methods
Modulus Test Method
Low Modulus Test Method
125 psi ASTM D412, 100% modulus
Shore A Hardness Test Methods
Shore A Hardness Shore Hardness Test Method
40 ASTM C661