• Description for Bostik 70-37

    A one-component, moisture curing, adhesive/sealant based upon Bostik Silyl Modified Polymer (SMP) Technology. Significant product benefits include, fast skinning (<45 mins.), 100% solids, non-yellowing, contains no solvent (alcohols, xylene, etc.), and paint compatible.

    Note: This material has been discontinued. Please view the Comparable Materials tab or call us at (262) 293-7970 for additional help.

    *See Terms of Use Below

    Application Type bond, Seal
    1 Part or 2 Part 1-Part
    Material Form Paste
    Manufacturer Bostik
    Chemistry Silyl Modified Polymer (SMP), free of alcohols, xylene
    Cure Method Moisture
    Cure Time (min) 1,440 to 2,160
  • Technical Data for Bostik 70-37

    • Application Type
    • 1 Part or 2 Part
      • 1-Part
    • Material Form
      • Paste
    • Industry
    • Chemistry
      • Solvent-Free - free of alcohols, xylene
      • Silyl Modified Polymer (SMP) / MS Polymer - Silyl Modified Polymer (SMP)
    • Cure Method
      • Moisture / Condensation Cure - Moisture
    Cure Specs
    Cure Time (min) 1,440 to 2,160 Test Method
    Set Time (min) Fast, 30 to 45
    Tack Free Time (min) Fast, 30 to 45
    Work / Pot Time (min) 35 to 45 Test Method
    Thixotropic Medium thixotrophy
    Bond Strength
    Tensile Strength (psi) 150
    Material Resistance
    UV Resistance Excellent
    Shore A Hardness 45
    Elongation (%) 500 Test Method
    Modulus (psi) 30, 50, 70 Test Method
    Other Properties
    % Solids (%) 1.0
    Business Information
    Shelf Life Details Bostik 70-37A may be stored for 12 months in a closed (unopened) container in a dry place at temperatures below 80°F (27°C).
    Shelf Life (mon) 12
  • Best Practices for Bostik 70-37

    *See Terms of Use Below

    1. Surface Preparation

      Substrates should be free of all loose contamination, greases, oils, etc. Use Isopropyl alcohol or other approved solvent for substrate pretreatment.

    2. Clean-Up

      Cleaning tools or removing uncured residue of Bostik® 70-37A can be done with a clean colorless cloth, wetted with Isopropyl alcohol.

    3. Testing

      It is recommended to make a trial first to check possible attack of the substrate by Isopropyl alcohol.

  • Comparable Materials for Bostik 70-37

    *See Terms of Use Below

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Cure Time Test Methods
Cure Time Test Method
1,440 to 2,160 min 1/8-inch bead
Work / Pot Time Test Methods
Work / Pot Time Test Method Temperature
35 to 45 min (after 7 days ambient cure at 77°F and 50% RH 25°C
Elongation Test Methods
Elongation Test Method
500 % (to break)
Modulus Test Methods
Modulus Test Method
30 psi 25% Elongation
50 psi 50% Elongation
70 psi 100% Elongation