Sikaflex®-1A
ELASTOMERIC JOINT SEALANT / ADHESIVE
Sikaflex®-1A is a premium-grade, high-performance, moisture-cured, 1-component, polyurethane-based, non-sag elastomeric sealant. Sikaflex-1a can be used in green and damp concrete applications. Meets Federal Specification TT-S-00230C, Type II, Class A. Meets ASTM C920, Type S, Grade NS, Class 35, Use T, NT, O, M, A, I. Canadian standard CAN/CGSB 19.13-M87.
- Eliminates time, effort, and equipment for mixing, filling cartridges, pre-heating or thawing, and cleaning of equipment.
- Fast tack-free and final cure times.
- High elasticity - cures to a tough, durable, flexible consistency with exceptional cut and tear -resistance.
- Stress relaxation.
- Excellent adhesion - bonds to most construction materials without a primer.
- Excellent resistance to aging, weathering.
- Proven in tough climates around the world.
- Can be applied to green concrete 24 hours after pour
- Can be applied to damp concrete 1 hour after getting wet
- Non-staining.
- Jet fuel resistant.
- Certified to NSF/ANSI/CAN 61 for potable water (meets applicable requirements of NSF/ANSI 600).
- Urethane-based; suggested by EPA as a caulk and crack sealant for radon reduction.
- Paintable with water-, oil- and rubber-based paints.
- Capable of ±35% joint movement.
Usage
- Designed for all types of joints where maximum depth of sealant will not exceed 1/2 in.
- Excellent for small joints and fillets, windows, door frames, reglets, flashing, common roofing detail applictions, and many construction adhesive applications.
- Suitable for vertical and horizontal joints; readily placeable at 40°F
- Has many applications as an elastic adhesive between materials with dissimilar coefficients of expansion.
- Submerged conditions, such as canal and reservoir joints.
Advantages
- Eliminates time, effort, and equipment for mixing, filling cartridges, pre-heating or thawing, and cleaning of equipment.
- Fast tack-free and final cure times.
- High elasticity - cures to a tough, durable, flexible consistency with exceptional cut and tear -resistance.
- Stress relaxation.
- Excellent adhesion - bonds to most construction materials without a primer.
- Excellent resistance to aging, weathering.
- Proven in tough climates around the world.
- Can be applied to green concrete 24 hours after pour
- Can be applied to damp concrete 1 hour after getting wet
- Non-staining.
- Jet fuel resistant.
- Certified to NSF/ANSI/CAN 61 for potable water (meets applicable requirements of NSF/ANSI 600).
- Urethane-based; suggested by EPA as a caulk and crack sealant for radon reduction.
- Paintable with water-, oil- and rubber-based paints.
- Capable of ±35% joint movement.
Packaging
10.1 fl. oz. (300 ml) cartridge, 20 fl. oz. (600 ml) sausage,
4.5 gal (17 L) in a 5 gal pail, 52 gal (197 L) in a 55 gal drum
Color
White, colonial white, aluminum gray, limestone, black, dark bronze, capitol tan, stone and medium bronze. Special architectural colors on request.
Product Details
APPROVALS / STANDARDS
- ASTM C920, Type S, Grade NS, Class 35, Use T, NT, O, M, A, I
- SWRI validated acc. to ASTM C719 (No. 0123-S0128)
- Federal specification TT-S-00230 C Type II, Class A
- Canadian Standard CAN/CGSB 19.13-M87
- Certified to NSF/ANSI/CAN 61 for potable water (meets applicable requirements of NSF/ANSI 600).
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Shelf Life
Cartridge and Sausage: 12 months in original, unopened packaging.
Pail and Drum: 6 months in original, unopened packaging.
Storage Conditions
Store at 40°-95°F (4°-35°C).
Shore A Hardness
| (21 day) 45±5 | (ASTM C 661) |
Tensile stress at specified elongation
| 21 day Tensile Stress | 175 psi (1.21 MPa) |
| Stress @ 100% | 85 psi (0,59 N/mm2) |
Movement Capability
| ±35 % | (ASTM C-719) |
Adhesion in peel
| Substrate | Peel Strength | Adhesion loss |
| Concrete | 20 lbs | 0 % |
| Aluminium | 20 lbs | 0 % |
| Glass | 20 lbs | 0 % |
Tear Strength
| 55 lb./in. | (ASTM D-624) |
Service Temperature
−40 °F to +170 °F
Chemical Resistance
Good resistance to water, diluted acids, and diluted alkalines. Consult Technical Service for specific data.
Resistance to Weathering
Excellent
Application
Cure Time
4 to 7 days (73 °F / 50 % r.h.)
Curing Rate
up to 1/8" after 24 hours (73 °F / 50 % r.h.)
Tack Free Time
3 to 6 hours (73 °F / 50 % r.h.)
Coverage
10.1 oz Cartridge: Yield in Linear Feet
| Width/Depth | 1/4" | 3/8" | 1/2" |
| 1/4" | 24.3 | ||
| 3/8" | 16.2 | 10.8 | |
| 1/2" | 12.1 | 8.1 | 6.1 |
| 3/4" | 8.1 | 5.4 | 4.0 |
| 1" | 3.0 | ||
| 1.25" | 2.4 | ||
| 1.5" | 2.0 |
20 oz Sausage: Yield in Linear Feet
| Width/Depth | 1/4" | 3/8" | 1/2" |
| 1/4" | 48.1 | ||
| 3/8" | 32.1 | 21.4 | |
| 1/2" | 24.1 | 16.0 | 12.0 |
| 3/4" | 16.0 | 10.7 | 8.0 |
| 1" | 6.0 | ||
| 1.25" | 4.8 | ||
| 1.5" | 4.0 |
1 gallon: Yield in Linear Feet
| Width/Depth | 1/4" | 3/8" | 1/2" |
| 1/4" | 307.9 | ||
| 3/8" | 205.3 | 136.8 | |
| 1/2" | 153.9 | 102.6 | 77.0 |
| 3/4" | 102.6 | 68.4 | 51.3 |
| 1" | 38.5 | ||
| 1.25" | 30.8 | ||
| 1.5" | 25.7 |
SUBSTRATE PREPARATION
Product Conditioning: Condition material to 65°-75°F before using.
Clean all surfaces. Joint walls must be sound, clean, frost-free, and free of oil and grease. Curing compound residues and any other foreign matter must be thoroughly removed. A roughened surface will also enhance bond. Install bond breaker tape or backer rod to prevent bond at base of joint. Priming is not usually necessary. Most substrates only require priming if testing indicates a need or where sealant will be subjected to water immersion after cure.
For green concrete applications control joints must be cut 8 hours prior to sealant installation and in expansion joint forms must be removed 4 hours prior to sealant installation. For wet concrete applications all excess or standing water must be displaced and concrete must then dry for a minimum of 60 min prior to sealant installation. Consult Sikaflex Primer Technical Data Sheet or Technical Service for additional information on priming.
CLEANING OF TOOLS
Clean all tools and application equipment with Sika® Remover-208 immediately after use. Hardened material can only be removed mechanically.