• Description for Bostik Chem-Calk 950

    One-component, construction grade pourable sealant capable of dynamic joint movement; properties remain stable in severe weather and temperature changes.

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

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    Application Type Bond, Seal
    1 Part or 2 Part 1 Part
    Material Form Paste
    Substrate Ceramics, Porous, Steel, Masonary, Wood
    Manufacturer Bostik
    Chemistry Polyurethane
    Cure Method Moisture
    Cure Temperature (°C) 25
    Cure Time (min) 8,640
    Viscosity (cPs) Pourable, Non-Sag
    Color Limestone, Limestone, Stone
    Ozone Resistance Excellent Ozone resistance
    High Temperature Resistance (°C) 66
    Low Temperature Resistance (°C) -29
  • Technical Data

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  • Best Practices

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Tack Free Time Test Methods
Tack Free Time Test Method
240 min C679
Tensile Strength Test Methods
Tensile Strength Cure Time Cure Temperature Cure Humidity Test Method
171 psi >10,080 min 25°C 50 % @ Break, ASTM D 412, After 7 days cure at 77°F and 50% RH
Peel Strength Test Methods
Peel Strength Cure Time Cure Temperature Cure Humidity Test Method
>30 piw >10,080 min 25°C 50 % TT-S-00230C/ASTM C 794, After 7 days cure at 77°F and 50% RH
UV Resistance Test Methods
UV Resistance Test Method
Good ASTM C 793
Elongation Test Methods
Elongation Test Method
5 % ASTM D 412, at Break
Modulus Test Methods
Modulus Test Method
140 psi @ 100% Elongation ASTM D 412, After 7 days cure at 77°F and 50% RH
Shore A Hardness Test Methods
Shore A Hardness Shore Hardness Test Method Hardness Temperature
48 ASTM D 2240, After 7 days cure at 77°F and 50% RH 25°C