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Description for Bostik Chem-Calk Fast Set
Architectural grade fast curing urethane sealant; high tear; abrasion resistant; withstands movement with less dirt pick-up.Application Type Seal, Gap Filler: Sapcers shims 1 Part or 2 Part 1-Part Material Form Paste Substrate Ceramics, Plastics, Steel, Masonary, Wood, Concrete panel, Porous, Non-porous Industry Windows, Doors Manufacturer Bostik Chemistry Polyurethane Cure Method Atmospheric Moisture Cure Temperature (°C) 25, 25 Cure Time (min) Fast, 2,160 to 4,320, 20,160 Color Black, Gray, White, Stone Ozone Resistance Excellent Ozone resistance High Temperature Resistance (°C) 66 Low Temperature Resistance (°C) -29 Durability Tough Key Specifications ASTM (American Standard Test Method): C920: ASTM C920 Elastomeric Joint Sealants as Type S.Grade NS. Class 25. Use NT. A and M, CAN/CGSB (Canadian General Standards Board): CAN/CGBS 19.24, TT (U.S. Federal Specification): TT-S00230C -
Technical Data for Bostik Chem-Calk Fast Set
Overview
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Application Type
- Gap Filler : Shimming - Sapcers shims
- Sealant - Seal
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1 Part or 2 Part
- 1-Part
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Material Form
- Paste
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Industry
- Industrial - Joint fillers, Perimeter joints, Sealing expansion joints
- Construction - Building components, Walls
- Construction Window - Windows
- Construction Door - Doors
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Chemistry
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Application Method
- Dispenser - Gun
- Contact - Positive pressure adequate
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Cure Method
- Moisture / Condensation Cure - Atmospheric Moisture
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Color
- Black
- Gray - Stone
- White
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Key Specifications
- ASTM (American Standard Test Method) : C920 : Class 25 - ASTM C920 Elastomeric Joint Sealants as Type S.Grade NS. Class 25. Use NT. A and M
- CAN/CGSB (Canadian General Standards Board) : 19.24 - CAN/CGBS 19.24
- TT (U.S. Federal Specification) : S-00230C - TT-S00230C
Specifications
Cure Specs
Cure Temperature (°C) 25, 25 Test Method Cure Time (min) Fast, 2,160 to 4,320, 20,160 Test Method Set Time (min) Fast Tack Free Time (min) 90 Test Method Work / Pot Time (min) 70 Test Method Thixotropic Thixotropic Bond Strength
Peel Strength (piw) >25 Test Method Tensile Strength (psi) 240 Test Method Material Resistance
Ozone Resistance Excellent Ozone resistance UV Resistance Good Test Method High Temperature Resistance (°C) 66 Low Temperature Resistance (°C) -29 Moisture/Humidity Resistance Moisture/humidity resistance Hardness
Durability Tough Shore A Hardness 37 Test Method Elongation (%) 850 Test Method Flexibility Flexible Modulus (psi) 65 Test Method Business Information
Shelf Life Details When stored at or below 80F (27C), Chem-Calk Fast Set polyurethane weatherproofing sealant has a shelf life of twelve months from date of manufacture. Shelf Life Temperature (°F) <81 Shelf Life Type From date of manufacture Shelf Life (mon) 12 -
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Best Practices for Bostik Chem-Calk Fast Set
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Application
Install backup material or joint filler, spacer shims and tapes as specified. Apply Chem-Calk Fast Set polyurethane sealant in a continuous operation using a positive pressure adequate to properly fill and seal the joint. Tool the sealant with adequate pressure to spread the sealant against the backup material and onto the joint surfaces. A tool with a concave profile is recommended to keep the sealant within the joint.
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Clean-Up
Excess sealant should be dry-wiped from all surfaces while still uncured, following with a commercial solvent such as xylol, toluol, or methyl ethyl ketone. 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. Bostik recommends the use of Bostik Hand & Tool Towels for easy removal of uncured Chem-Calk Fast Set from surfaces, hands and tools. CURED SEALANT IS USUALLY VERY DIFFICULT TO REMOVE WITHOUT ALTERING OR DAMAGING THE SURFACE TO WHICH THE SEALANT HAS BEEN MISAPPLIED.
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Cure Temperature Test Methods
Cure Temperature | Cure Time Test Method |
---|---|
25°C | Uncured, Varies w/ relative humidity |
25°C | After 14 day cure at 77°F & 50% RH |
Cure Time Test Methods
Cure Time | Test Method |
---|---|
Fast | |
2,160 to 4,320 min | Uncured, Varies w/ relative humidity |
20,160 min | After 14 day cure at 77°F & 50% RH |
Tack Free Time Test Methods
Tack Free Time | Test Method |
---|---|
90 min | Uncured, ASTM C 679 |
Work / Pot Time Test Methods
Work / Pot Time | Test Method |
---|---|
70 min | Bostik Test Method |
Peel Strength Test Methods
Peel Strength | Cure Time | Cure Temperature | Test Method |
---|---|---|---|
>25 piw | 20,160 min | 25°C | ASTM C 794, After 14 days cure at 77°F & 50% RH |
Tensile Strength Test Methods
Tensile Strength | Cure Time | Cure Temperature | Cure Humidity | Test Method |
---|---|---|---|---|
240 psi | 20,160 min | 25°C | 50 % | ASTM D 412, After 14 days cure at 77°F & 50% RH |
UV Resistance Test Methods
UV Resistance | Test Method |
---|---|
Good | ASTM C 793 75 |
Elongation Test Methods
Elongation | Test Method |
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850 % | ASTM D 412, at break, After 14 days cure at 77°F & 50% RH |
Modulus Test Methods
Modulus | Test Method |
---|---|
65 psi | @ 100% Elongation ASTM D 412, After 14 days cure at 77°F & 50% RH |
Shore A Hardness Test Methods
Shore A Hardness | Shore Hardness Test Method | Hardness Temperature |
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37 | ASTM D 2240, After 14 days cure at 77°F & 50% RH | 25°C |