Bostik Chem-Calk 550

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Description for Bostik Chem-Calk 550

Two-component, pourable, 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, Metals, Plastics, Steel, Wood, Concrete
Manufacturer	Bostik
Chemistry	Polyurethane
Cure Method	2 Parts
Cure Temperature (°C)	25
Cure Time (min)	10,080
Viscosity (cPs)	Pourable
Color	Stone, standard colors (25), 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: C920, Type M, Grade P, Class 25, CAN/CGSB (Canadian General Standards Board): CAN/CGSB-19.24-M90, TT (U.S. Federal Specification): S-227E: TT-S-227E Class A

Best Practices for Bostik Chem-Calk 550

*See Terms of Use Below

Application

Install backup material or joint filler as specified

and primer when applicable. Apply Chem-Calk® 550 polyurethane sealant in a continuous operation using a positive pressure adequate to properly fill and seal the joint. The Chem-Calk® 550 is pourable and will tend to seek its own level. Tooling is recommended to ensure proper wetting of the joint surfaces.
Mixing

Chem Calk® 550 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.
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 specific 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 Findley recommends the use of Bostik® Hand & Tool Towels for easy removal of uncured CC550 from surfaces, hands and tools.

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Technical Data

Overview

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Specifications

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Best Practices

*See Terms of Use Below
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Bostik Chem-Calk 550

Description for Bostik Chem-Calk 550

Best Practices for Bostik Chem-Calk 550

Application

Mixing

Clean-Up

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Why register?

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Technical Data

Overview

ipsum sit diam consectetuer.

dolor sit diam.

nonummy.

ipsum nibh.

amet.

adipiscing lorem dolore.

magna.

Specifications

diam sit consectetuer consectetuer.

consectetuer lorem diam.

magna aliquam dolor magna.

lorem dolor lorem ut.

euismod elit consectetuer sit.

nibh.

elit.

Best Practices

elit lorem sed laoreet lorem.

diam euismod diam erat.

sit aliquam laoreet erat ipsum nonummy.

ut erat magna dolore sed.

amet elit ut.

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