Sikaflex®-2c NS EZ Mix+
Sikaflex®-2c NS EZ Mix+ is a 2-component, premium-grade, polyurethane-based, elastomeric sealant. It is principally a chemical cure in a non-sag consistency. Meets ASTM C920, Type M, Grade NS, Class 50, Use T, NT, M, A, O, I and Federal specification TT-S-00227 E, Type II, Class A. Meets Canada Standard CAN/CGSB 19.24 - M90.
- True Movement Capability Class 50 sealant
- Chemical cure allows the sealant to be placed in joints exceeding 1/2 in. in depth
- Ideal for vertical and horizontal applications
- Placeable at temperatures as low as 4 °C (40 °F)
- Adheres to most substrates commonly found in construction
- High elasticity with a tough, durable, flexible consistency
- Exceptional cut and tear resistance
- Exceptional adhesion to most substrates without priming
- Can be mixed in the field with Universal Color-Pak
- Non-sag even in wide joints
- Easy to mix
- Can be applied to green concrete 24 hours after pour
- Can be applied to damp concrete 60 minutes after getting wet
- Paintable with water-, oil-, and rubber-base paints
- Jet fuel resistant
- Tested Joining and Sealing Material for Drinking Water Systems (UL file no. MH17464)
- Tested in fire-rated assemblies
- Shore A hardness can be increased by using “TG+” additive. See Sikaflex®-2C NS TG+ data sheet for specific details
Usage
- Intended for use in all properly designed working joints with a minimum depth of 1/4 inch.
- An effective sealant for use in Exterior Insulation Finish Systems (EIFS).
- Submerged environments, such as canal and reservoir joints.
Advantages
- True Movement Capability Class 50 sealant
- Chemical cure allows the sealant to be placed in joints exceeding 1/2 in. in depth
- Ideal for vertical and horizontal applications
- Placeable at temperatures as low as 4 °C (40 °F)
- Adheres to most substrates commonly found in construction
- High elasticity with a tough, durable, flexible consistency
- Exceptional cut and tear resistance
- Exceptional adhesion to most substrates without priming
- Can be mixed in the field with Universal Color-Pak
- Non-sag even in wide joints
- Easy to mix
- Can be applied to green concrete 24 hours after pour
- Can be applied to damp concrete 60 minutes after getting wet
- Paintable with water-, oil-, and rubber-base paints
- Jet fuel resistant
- Tested Joining and Sealing Material for Drinking Water Systems (UL file no. MH17464)
- Tested in fire-rated assemblies
- Shore A hardness can be increased by using “TG+” additive. See Sikaflex®-2C NS TG+ data sheet for specific details
Packaging
5.67 L (1.5 US gal.) unit.
11.35 L (3 US gal.) unit.
Colour
- Limestone (original factory colour)
- 11 architectural colours available with Sika Canada's exclusive Color-Paks system
- Special colours available on request
Product Details
ENVIRONMENTAL INFORMATION
- Contributes towards satisfying LEED® v4 EQ Credit - Low-Emitting Materials
- Contributes towards satisfying LEED®v4 MR Credit - Building Product Disclosure and Optimization - Material Ingredients (Option 1)
- Contributes towards satisfying LEED®v4 MR Credit - Building Product Disclosure and Optimization - Sourcing of Raw Materials
APPROVALS / CERTIFICATES
- ASTM C920, Type M, Grade NS, Class 50, Use T, NT, O, M, A, I
- Approved by Ministère des Transports et Mobilité Durable Québec (MTMD)
- SWRI validated acc. to ASTM C719 (SIKA24-NSEX29)
- Federal specification TT-S-00227 E, Type II, Class A
- Canadian Standard CAN/CGSB 19.24-M90
- Certified to NSF/ANSI/CAN 61 for potable water (meets applicable requirements of NSF/ANSI 600).
- 2-hour UL Fire Rated Joint System (UL file nos. FF-S-1034, FW-S-1020, HW-S-1018, WW-S-1037).
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Shelf Life
24 months in original, unopened containers.
Storage Conditions
Store dry at 4–35 °C (40–95 °F).
Condition material to 18–24 °C (65–75 °F) before using.
Shore A Hardness
| 25 | (after 21 days at 23 °C (73 °F) and 50 % R.H.) (ASTM C-661) |
Tensile Strength
| 0.81 MPa (118 psi) | (after 7 days at 23 °C (73 °F) and 50 % R.H.) (ASTM D-412) |
Tear Strength
| > 6 N/mm (34 lbf./in.) | (after 7 days at 23 °C (73 °F) and 50 % R.H.) (ASTM D-624) |
Application
Ambient Air Temperature
4 to 38 °C (40 °F to 100 °F)
Sealant should be installed when joint is at mid-range of its anticipated movement.
Substrate Temperature
4 to 38 °C (40 °F to 100 °F)
Sealant should be installed when joint is at mid-range of its anticipated movement.
Curing Time
| 3 days | 23 °C (73 °F) and 50 % R.H. |
Application Time
3 hours at 23 °C (73 °F)
Consumption
1 US gal: yield in linear feet
| Width/Depth | 6 mm (1/4 in) | 9.5 mm (3/8 in) | 13 mm (1/2 in) |
| 6 mm (1/4 in) | 307.9 | ||
| 9.5 m (3/8 in) | 205.3 | 136.8 | |
| 13 mm (1/2 in) | 153.9 | 102.6 | 77.0 |
| 19 mm (3/4 in) | 102.6 | 38.4 | 51.3 |
| 25 mm (1 in) | 38.5 | ||
| 32 mm (1.25 in) | 30.8 | ||
| 38 (1.5 in) | 25.7 |
1 litre: yield in linear metre
| Width/Depth | 6 mm (1/4 in) | 9.5 mm (3/8 in) | 13 mm (1/2 in) |
| 6 mm (1/4 in) | 24.8 | ||
| 9.5 m (3/8 in) | 16.5 | 11.0 | |
| 13 mm (1/2 in) | 12.4 | 8.2 | 6.2 |
| 19 mm (3/4 in) | 8.2 | 3.1 | 4.1 |
| 25 mm (1 in) | 3.1 | ||
| 32 mm (1.25 in) | 2.4 | ||
| 38 (1.5 in) | 2.0 |
SUBSTRATE PREPARATION
All joint surfaces must be clean, sound, and frost-free. Joint walls must be free of oils, tar, asphalt, bitumen, grease, paints, coatings, sealers, curing compound residues, and any other foreign matter that might prevent adhesion. Ideally, substrate preparation and foreign matter removal should be accomplished by mechanical means. Bond breaker tape or backer rod must be used in bottom of joint to prevent three-sided adhesion, and control the depth of the sealant.
Priming is typically not necessary. Most substrates only require priming if sealant will be subjected to water immersion after cure. Testing should be done, however, on questionable substrates, to determine if priming is needed. Consult Technical Service or Sikaflex Primer Technical Data Sheet for additional information on priming. Note: Most Exterior Insulation Finish Systems (EIFS) manufacturers recommend the use of a primer. When EIFS manufacturer specifies a primer or if on-site bond testing indicates a primer is necessary, Sikaflex 429 primer is recommended. On-site adhesion testing is recommended with final system prior to the start of a job.
MIXING
Pour entire contents of Component ‘B’ into pail of Component ‘A’. Add entire contents of Color-pak into pail and mix with a low-speed drill (400–600 rpm) and proper mixing paddle. Mix for 3–5 minutes to achieve a uniform color and consistency. Scrape down sides of pail periodically. Avoid entrapment of air during mixing. When mixing in cold weather (< 10 °C / 50 °F), do not force the mixing paddle to the bottom of the pail. After adding Component ‘B’ and Color-pak into Component ‘A’, mix the top 1/2 to 3/4 of the pail during the first minute of mixing. After scraping down the sides of the pail, mix again for another minute. The paddle should reach the bottom of the pail between the first and second minute of mixing. Scrape down the sides of the pail a second time and then mix for an additional 2–3 minutes until the sealant is well blended. Color-pak must be used with tint base. For pre-pigmented Limestone base, just mix with low speed drill and proper mixing paddle (no Color-pak needed).
