Application Type Bond, Repair, Seal 1 Part or 2 Part 1 Part Material Form Paste Substrate Ceramics, Metals, Plastics, Steel, Wood Industry Window framing, Door framing Manufacturer Bostik Chemistry Polyurethane Cure Method Moisture Cure Temperature (°C) 25 Cure Time (min) 4,320 to 10,080 Viscosity (cPs) Non-Sag, Slump Color Black, Medium Bronze, Limestone, Limestone, Antique White, Bronze, Tan, Stone, White, Medium Bronze High Temperature Resistance (°C) 66 Low Temperature Resistance (°C) -40 Durability Tough
Technical Data for Bostik CC-900
1 Part or 2 Part
- 1 Part or 2 Part - 1 Part
- Dispenser - Gun
- Moisture / Condensation Cure - Moisture
- Brown - Medium Bronze, Tan
- Gray - Limestone, Stone
- Off-White - Limestone
- White - Antique White
- Yellow - Bronze, Medium Bronze
Cure Temperature (°C) 25 Test Method Cure Time (min) 4,320 to 10,080 Test Method Viscosity (cPs) Non-Sag, Slump Tack Free Time (min) 360 Test Method Work / Pot Time (min) 70 Test Method
Peel Strength (piw) >35 Test Method Tensile Strength (psi) 180 Test Method
UV Resistance Pass Test Method High Temperature Resistance (°C) 66 Low Temperature Resistance (°C) -40
Durability Tough Shore A Hardness 38 Test Method Elongation (%) 950 Test Method Flexibility Flexible, Elastomeric Modulus (psi) 70 Test Method
Shelf Life Details Shelf life of Chem-Calk 900 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.
Best Practices for Bostik CC-900
In general, more joint movement can be accommodated in a thin bead of sealant than a thick bead. Chem-Calk® 900 polyurethane sealant should be no thicker than 1/2" (12.7mm) and no thinner than 1/4" (6.4mm). In joints between 1/2" and 1", the ratio of sealant width to depth should be approximately 2:1. Sealant depth in joints between 1/4” and 1/2" should be 1/4" deep. Joints with dynamic movement should not be designed in widths less than 1/4".
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.
Chem-Calk 900 is a moisture cure, polyurethane sealant. On wood, with ambient air at 50% relative humidity and at 73°F, polyurethane sealants will generally skin within four hours 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.
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).
Comparable Materials for Bostik CC-900
Spec Engine® Results
Closest Results from this Manufacturer
Questions about this material?
Get personal assistance with your specific application needs.
Using LOCTITE® 454™ is a Valid Option for Engineers Working with a Wide Variety of MaterialsRead Article
Sylgard 184 by DOW is the Top Choice for a Transparent, Silicone Encapsulant. Read Why:Read Article
Cure Temperature Test Methods
|Cure Temperature||Cure Time Test Method|
|25°C||Uncured, Varies w/relative humidity|
Cure Time Test Methods
|Cure Time||Test Method|
|4,320 to 10,080 min||Uncured, Varies w/relative humidity|
Tack Free Time Test Methods
|Tack Free Time||Test Method|
|360 min||Uncured, TT-S-00230C/ASTM C 679|
Work / Pot Time Test Methods
|Work / Pot Time||Test Method|
|70 min||Uncured, Bostik Test Method|
Peel Strength Test Methods
|Peel Strength||Cure Time||Cure Temperature||Cure Humidity||Test Method|
|>35 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|
|180 psi||20,160 min||25°C||50 %||@ Break, ASTM D 412, After 14 days cure at 77°F and 50% RH|
UV Resistance Test Methods
|UV Resistance||Test Method|
|Pass||ASTM C 793|
Elongation Test Methods
|950 %||ASTM D 412, at break, After 14 days cure at 77°F and 50% RH|
Modulus Test Methods
|70 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|
|38||ASTM D 2240, After 14 days cure at 77°F and 50% RH||25°C|