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Description for Bostik Chem-Calk 2000 Smooth
One-component; high performance; low VOC; non-gassing and color fast sealant for joints that may experience dynamic movement.Application Type Bond, Seal 1 Part or 2 Part 1-Part Material Form Paste Substrate Metal, Fiber Cement Board (FCB), Wood, Porous substrates, Vinyl Industry Windows, Doors Manufacturer Bostik Chemistry Non-silicone, Polyurethane Cure Method Moisture Cure Temperature (°C) 77 Cure Time (min) 1,440 to 4,320 Viscosity (cPs) Sag, Slump Color Almond, Stone, White, Bronze Key Specifications ASTM (American Standard Test Method): C920: ASTM C920, TYPE S, GRADE NS, CLASS 25, USE NT, A AND M -
Technical Data for Bostik Chem-Calk 2000 Smooth
Overview
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1 Part or 2 Part
- 1-Part
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Material Form
- Paste
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Industry
- Industrial - Wall penetrations on vinyl
- Construction - Metal building construction
- Construction Window - Windows
- Construction Door - Doors
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Chemistry
- Other - Non-silicone
- Polyurethane
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Application Method
- Dispenser - Gun
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Cure Method
- Moisture / Condensation Cure - Moisture
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Color
- Brown - Almond
- Gray - Stone
- White
- Yellow - Bronze
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Key Specifications
- ASTM (American Standard Test Method) : C920 : Class 25 - ASTM C920, TYPE S, GRADE NS, CLASS 25, USE NT, A AND M
Specifications
Cure Specs
Cure Temperature (°C) 77 Test Method Cure Time (min) 1,440 to 4,320 Test Method Viscosity (cPs) Sag, Slump Tack Free Time (min) 30 to 45 Work / Pot Time (min) <30 Test Method Bond Strength
Peel Strength (piw) >5 Test Method Tensile Strength (psi) 254 Test Method Hardness
Shore A Hardness 34 Test Method Elongation (%) 531 Test Method Flexibility Elastomeric Modulus (psi) 50, 89 Test Method Business Information
Shelf Life Details Shelf life of Bostik Chem-Calk 2000 Smooth 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 moisture cure sealants. If you are unsure of the expiration date of your Bostik product, please call customer service at 1-888-603-8556 to check if the product is still within its shelf life. Not Good For
Don't Use For Glazing applications., Narrow joints, fillet joints and nail face holes., over joints, for horizontal joints or traffic-bearing joints where abrasion resistance is required, glazing applications Don't Use With damp, contaminated, loose surfaces -
Best Practices for Bostik Chem-Calk 2000 Smooth
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Surface Preparation
See limitations about surface preparation. Surfaces must be structurally clean, dry (no frost) and structurally sound, free of contaminants, including but not limited to dust, dirt, loose particles, tar, asphalt, rust, mill oil, etc. If substrate is painted or coated, scrape away all loose and weakly bonded paint or coating. Any paint or coating that cannot be removed must be tested to verify adhesion of the sealant or to determine the appropriate surface preparation if needed. (See ASP section on next page for details.) To remove laitance and any other loose material, clean concrete, stone or other masonry materials with nonalcoholic-based solvent by washing, grinding, sandblasting or wire brushing as necessary. Do not use water to clean substrates. Dust must be thoroughly removed after cleaning.
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Curing
Bostik Chem-Calk 2000 Smooth is a moisture cure, hybrid sealant. On wood, with ambient air at 50% relative humidity and at 73°F, hybrid sealants will generally skin within one hour and cure 1/16 of an inch per day. Lower temperature and lower relative humidity will significantly increase the skin time and cure time of a polyurethane sealant.
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Clean-Up
After dry-wiping uncured sealant from substrates and tools, remaining uncured sealant can be removed by using Xylene, Toluene or similar aromatic solvents. Please refer to the MSDSs provided for these solvents before use. Bostik® Hand and Tool Towels can also remove uncured sealant. Cured sealant is usually very difficult to remove without altering or damaging the surface to which the sealant has been misapplied. Cured sealant can be removed by abrasion or other mechanical means (scrapers, putty knives).
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Cure Temperature Test Methods
Cure Temperature | Cure Time Test Method |
---|---|
77°C | Varies w/relative humidity |
Cure Time Test Methods
Cure Time | Test Method |
---|---|
1,440 to 4,320 min | Varies w/relative humidity |
Work / Pot Time Test Methods
Work / Pot Time | Test Method |
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<30 min | Bostik Test Method |
Peel Strength Test Methods
Peel Strength | Cure Time | Cure Temperature | Cure Humidity | Test Method |
---|---|---|---|---|
>5 piw | 20,160 min | 25°C | 50 % | TT-S-00230C/ASTM C 794, After 14 days cure at 77°F and 50% RH |
Tensile Strength Test Methods
Tensile Strength | Cure Time | Cure Temperature | Cure Humidity | Test Method |
---|---|---|---|---|
254 psi | 20,160 min | 25°C | 50 % | @ Break, ASTM D 412, After 14 days cure at 77°F and 50% RH |
Elongation Test Methods
Elongation | Test Method |
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531 % | ASTM D 412, After 14 days cure at 77°F and 50% RH, at break |
Modulus Test Methods
Modulus | Test Method |
---|---|
50 psi | @ 50% Elongation, ASTM D 412, After 14 days cure at 77°F and 50% RH |
89 psi | @ 100% Elongation, ASTM D 412, After 14 days cure at 77°F and 50% RH |
Shore A Hardness Test Methods
Shore A Hardness | Shore Hardness Test Method | Hardness Temperature |
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34 | ASTM D 2240, After 14 days cure at 77°F and 50% RH | 25°C |