Product Data Sheet
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Sikaflex®-2c NS Arctic

Sikaflex®-2c NS Arctic

Two-component, non-sag, polyurethane elastomeric sealant for arctic weather applications

Sikaflex®-2c NS Arctic is a 2-component, premium-grade, polyurethane based, elastomeric sealant formulated for cold weather applications. It is principally a chemical cure in a non-sag consistency. Available in a wide range of architectural colors with convenient color paks. Meets ASTM C-920, Type M, Grade NS, Class 25, use T, NT, M, G, A, O and Federal Specification TT-S-00227E, Type II, Class A. Meets CAN/CGSB 19.24 - M90.

  • Easy to mix, gun, tool down to 15F
  • At extreme cold temperatures the material will continue to be workable, gunable and toolable
  • Chemical cure allows the sealant to placed in greater depths for non-moving joints/cracks
  • High elasticity with a tough, durable, flexible consistency
  • Exceptional adhesion to most substrates without priming
  • Exceptional cut and tear resistance
  • Available in 35 standard architectural colors
  • Color uniformity via Color-pak system
  • Capable of +/- 50 % Movement
  • Non-sag even in wide joints
  • Paintable with water, oil, and rubber based paints
  • Jet fuel resistant
Product Data Sheet
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Usage

  • Intended for use in all properly designed working joints with a minimum depth of 1/4 inch.
  • Ideal for vertical and horizontal applications.
  • Adheres to most substrates commonly found in construction.
  • Mixable and placeable at temperatures as low as 15 F
  • Submerged environments, such as canal and reservoir joints.
  • An effective sealant for use in Exterior Insulation Finish Systems (EIFS).
 

Advantages

  • Easy to mix, gun, tool down to 15F
  • At extreme cold temperatures the material will continue to be workable, gunable and toolable
  • Chemical cure allows the sealant to placed in greater depths for non-moving joints/cracks
  • High elasticity with a tough, durable, flexible consistency
  • Exceptional adhesion to most substrates without priming
  • Exceptional cut and tear resistance
  • Available in 35 standard architectural colors
  • Color uniformity via Color-pak system
  • Capable of +/- 50 % Movement
  • Non-sag even in wide joints
  • Paintable with water, oil, and rubber based paints
  • Jet fuel resistant

Packaging

1.5 gal. unit.

Color

Available in a wide range of architectural colors are available. Special colors available on request.

 

Product Details

Product Information

Shelf Life

One year in origonal, unopened containers.

Storage Conditions

Store dry at 15 °F (-9.4 °C) to 85 °F (35 °C).

Condition material to 15 °F (-9.4 °C) to 50 °F (10 °C) before using.
Technical Information

Shore A Hardness

73 °F (23 °C)

14

Tensile Strength

73 °F (23 °C)

73 psi

Elongation at maximum tensile stress

73 °F (23 °C)

600 %

Tensile Adhesion Strength

73 °F (23 °C)

73 psi

Tear Strength

73 °F (23 °C)

23 lbf/in

Tear Strain at Max. Stress

73 °F (23 °C)

570 psi

Service Temperature

-40º to 170º F (-40º- 75º C)

Chemical Resistance

Good resistance to water, diluted acids, diluted alka lines, and residential sewage. Consult Technical Service at 1-800-933-SIKA for specific data.

Resistance to Weathering

Excellent

Application

Application Information

Ambient Air Temperature

15 °F (-9.4 °C) to 50 °F (10 °C)

Substrate Temperature

15 °F (-9.4 °C) to 50 °F (10 °C)

Pot Life

15 °F (-10 °C)73 °F (23 °C)
5 hours1 hours

Cure Time

15 °F (-10 °C)73 °F (23 °C)
6 to 8 days3 to 4 days

Tack Free Time

15 °F (-10 °C)73 °F (23 °C)
8 hours1 hours
Consumption

Coverage

1 gallon: Yield in Linear feet

Width/Depth1/4''3/8''1/2''
1/4''307.9
3/8''205.3136.8
1/2''153.9102.677.0
3/4''102.668.451.3
1''38.5
1.25''30.8
1.5''25.7
Application steps

SUBSTRATE PREPARATION

All joint-wall surfaces must be clean, dry, sound, and frost-free. Use mechanical means (i.e. sandblasting, surface grinding) to remove oils, grease, curing compound residues, and any other foreign matter from joint walls that might prevent bond. Bond breaker tape or backer rod must be used in the bottom of the joint to prevent three sided adhesion.
Priming: Priming is typically not necessary. Most substrates only require a primer if sealant will be subject to water immersion after cure. Test questionable substrates to determine if priming is needed. Consult Sikaflex Primer Technical Data Sheet for additional information or Technical Service at 800-933-7452 or tslyn@us.sika.com (USA)
Note: Most Exterior Insulation Finish Systems (EIFS) manufacturers recommend the use of a primer. When EIFS manufacturer specifies a primer Sikaflex 429 primer is recommended.

MIXING

Pour entire contents of Component ‘B’ into pail of component ‘A’. Add entire contents of Color Pak. Mix with a slow speed drill (400–600 rpm) and Sikaflex sealant mixing paddle (or other sealant paddle with rounded edges). Mix for 3–5 minutes to achieve a uniform color and consistency. Scrape down the side periodically to ensure all of the material is mixed. Avoid over-mixing and entrapment of air when mixing. Color pak must be used with tint base.

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