Bostik Chem-Calk 500

Bostik Chem-Calk 500 Datasheet
  • Description for Bostik Chem-Calk 500

    Two-component, non-sag, architectural grade sealant capable of dynamic joint movement; properties remain stable in severe weather and temperature changes.

    *See Terms of Use Below

    Application Type Bond, Seal
    1 Part or 2 Part 2 Part
    Material Form Paste
    Substrate Ceramics, Porous, Plastics, Steel, Wood
    Industry Door framing, Window framing
    Manufacturer Bostik
    Chemistry Polyurethane
    Cure Method 2 Parts
    Cure Temperature (°C) 25
    Cure Time (min) 10,080
    Viscosity (cPs) Non-Sag, Slump
    Color Stone, Standard colors, Uni-base
    Ozone Resistance Excellent Ozone resistance
    High Temperature Resistance (°C) 66
    Low Temperature Resistance (°C) -29
    Density (g/cm³) 13.4 (lbs/gal)
    Key Specifications ASTM (American Standard Test Method): C920: ASTM C920, Standard specification for elastomeric joint sealant, as Type M, Grade NS, Class 25, Use NT, A and M, CAN/CGSB (Canadian General Standards Board): CAN/CGSB 19.24-M90, TT (U.S. Federal Specification): S-227: TT-S-227 (Com. NBS) for two component sealants, Type II, Class A
  • Technical Data for Bostik Chem-Calk 500

    Overview
    • Application Type
    • 1 Part or 2 Part
      • 1 Part or 2 Part - 2 Part
    • Material Form
      • Paste
    • Substrate
    • Industry
      • Industrial - Concrete panels, Metal Curtain Walls
      • Construction - Building components
      • Construction Door - Door framing
      • Construction Window - Window framing
    • Chemistry
    • Application Method
      • Dispenser - Gun
    • Cure Method
      • 2-Part Cure - 2 Parts
    • Color
      • Gray - Stone
      • Other - Standard colors, Uni-base
    • Key Specifications
      • ASTM (American Standard Test Method): C920: Class 25 - ASTM C920, Standard specification for elastomeric joint sealant, as Type M, Grade NS, Class 25, Use NT, A and M
      • CAN/CGSB (Canadian General Standards Board): 19.24 - CAN/CGSB 19.24-M90
      • TT (U.S. Federal Specification): S-227: Class A - TT-S-227 (Com. NBS) for two component sealants, Type II, Class A
    Specifications
    Cure Specs
    Cure Temperature (°C) 25 Test Method
    Cure Time (min) 10,080 Test Method
    Viscosity (cPs) Non-Sag, Slump
    Work / Pot Time (min) 120 Test Method
    Bond Strength
    Tensile Strength (psi) 120 Test Method
    Material Resistance
    Ozone Resistance Excellent Ozone resistance
    UV Resistance Good Test Method
    High Temperature Resistance (°C) 66
    Low Temperature Resistance (°C) -29
    Hardness
    Shore A Hardness 20 Test Method
    Flexibility Flexible, Elastomeric
    Modulus (psi) 65 Test Method
    Other Properties
    Density (g/cm³) 13.4 (lbs/gal) Test Method
    Business Information
    Shelf Life Details Shelf life of Bostik® Chem-Calk® 500 must be checked prior to using the product; do not use past its shelf life. Caulk past its shelf life may not perform or adhere as described by this data sheet. High temperature and high relative humidity may reduce significantly the shelf life of polyurethane sealants.
    Shelf Life Temperature (°F) 75
    Shelf Life (mon) 12
    Not Good For
    Don't Use For Exterior or interior structural submerged applications.
  • Best Practices for Bostik Chem-Calk 500

    *See Terms of Use Below

    1. Mixing

      Chem-Calk® 500 is a multipart sealant provided as base, activator (or curing agent) and color pack. All the accelerator and appropriate color pack must be thoroughly mixed with the base to avoid uncured areas and/or color streaks. Failure to follow mixing instructions implicitly can result in spotty cure, random cure or complete lack of cure of the sealant. Do not attempt to mix partial units, as the exact ratio of curing agent to base is essential for optimum performance.

      See Vendor Technical Data Sheet for more info.

    2. Clean-Up

      Excess sealant should be dry-wiped from all surfaces while still uncured, and followed with a commercial solvent wipe. Contact Technical Service for solvent recommendations. Should sealant accidentally begin to cure on adjacent porous surfaces, the excess sealant should be allowed to progress through the initial cure or setup. It should be removed promptly by abrasion or other mechanical means. CURED SEALANT IS USUALLY VERY DIFFICULT TO REMOVE WITHOUT ALTERING OR DAMAGING THE SURFACE TO WHICH THE SEALANT HAS BEEN MISAPPLIED. Bostik recommends the use of Bostik® Hand & Tool Towels for easy removal of uncured Chem-Calk® 500 from surfaces, hands and tools.

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Cure Temperature Test Methods
Cure Temperature Cure Time Test Method
25°C After 7 days cure at 77°F and 50% RH
Cure Time Test Methods
Cure Time Test Method
10,080 min After 7 days cure at 77°F and 50% RH
Work / Pot Time Test Methods
Work / Pot Time Test Method
120 min ASTM C603, modified, approximately, Relative to temperature
Tensile Strength Test Methods
Tensile Strength Cure Time Cure Temperature Cure Humidity Test Method
120 psi 10,080 min 25°C 50 % ASTM D 412, After 7 days cure at 77°F and 50% RH
UV Resistance Test Methods
UV Resistance Test Method
Good ASTM C 793 75
Modulus Test Methods
Modulus Test Method
65 psi ASTM D 412
Shore A Hardness Test Methods
Shore A Hardness Shore Hardness Test Method Hardness Temperature
20 ASTM D 2240, After 7 days cure at 77°F and 50% RH 25°C
Density Test Methods
Density Test Method
13.4 (lbs/gal) ASTM D1475