• Description for Bostik Chem-Calk 2020

    A one-component, moisture curable advanced urethane sealant that offers superior adhesion to vinyl siding, vinyl trim board, and a variety of dissimilar surfaces. It is suitable for most building materials including stone, masonry, wood, aluminum and a variety of other metals.

    *See Terms of Use Below

    Application Type Bond, Seal
    1 Part or 2 Part 1 Part
    Material Form Paste
    Substrate Aluminum, Ceramic, Vinyl siding, A variety of dissimilar surfaces, Metals, Steel, Stone, Wood, Vinyl trim board
    Manufacturer Bostik
    Chemistry Solvent-free, advanced urethane
    Cure Method Moisture
    Color Blue Gray, Beige, Gray, Cream, Clay, Maple, White, Bronze, Tan, Stone, Heather, Antique White, Pearl
    High Temperature Resistance (°C) 82
    Low Temperature Resistance (°C) -40
    Key Specifications ASTM (American Standard Test Method): C920: ASTM C920, TYPE S, GRADE NS, CLASS 50, USE NT, A AND M., CAN/CGSB (Canadian General Standards Board): Canadian Specification SAC/CGSB 19.13-M87
  • Technical Data

    Overview
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    Specifications
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  • Best Practices

    *See Terms of Use Below

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Tack Free Time Test Methods
Tack Free Time Test Method
60 min Bostik Test Method
Tensile Strength Test Methods
Tensile Strength Cure Time Cure Temperature Cure Humidity Test Method
220 psi 20,160 min 25°C 50 % ASTM D412, After 14 days cure at 77°F and 50% RH
Elongation Test Methods
Elongation Test Method
700 % ASTM D-412 (After 7 days cure at 77ºF and 50% RH)
Shore A Hardness Test Methods
Shore A Hardness Shore Hardness Test Method
40 ASTM D2240 (After 14 days cure at 77°F and 50% RH)
Flash Point Test Methods
Flash Point Test Method
143.6°F ASTM D3828