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Sika Duoflex NS 1.5 Gal
Sika Duoflex NS is a two-component non-sag polysulfide sealant in a 1.5 gallon unit for vertical and overhead joints. It holds a pot life of approximately 1 hour at 73 F and ±25% movement.
- Non-sag polysulfide for vertical and overhead joints
- Pot life approximately 1 hour at 73 F
- ASTM C920 Type M, Grade NS, Class 25; ±25% movement
$379.14
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Sika Duoflex NS
Sika Duoflex NS is a two-component non-sag polysulfide sealant for vertical and overhead joints, interior or exterior. This 1.5 gallon unit (part 456162) mixes as a complete kit, holds a pot life of approximately 1 hour at 73 F, and meets ASTM C920 Type M, Grade NS, Class 25. Movement capability is ±25% with Shore A hardness approximately 25 to 30, and it is NSF/ANSI 61 compliant for drinking-water system components after full cure.
Key Features
- Two-component non-sag premium polysulfide sealant
- Designed for vertical and overhead surfaces
- Pot life approximately 1 hour; tack-free approximately 6 hours at 73 F
- Movement capability ±25%; Shore A hardness approximately 25 to 30
- Meets ASTM C920 Type M, Grade NS, Class 25
- NSF/ANSI 61 compliant for drinking-water system components after full cure
Applications
- Concrete and precast joints in water treatment and storage
- Expansion and control joints in walls and ceilings
- Secondary containment and fueling environments
- Bridges, roadways, and warehouse floors needing a tough elastic seal
Technical Specifications
| Property | Value |
|---|---|
| Manufacturer | Sika |
| Product | Sika Duoflex NS |
| Part no. | 456162 |
| Unit | 1.5 gallon kit |
| Mixed color | Bronze (brownish gray) |
| Chemistry | Two-component non-sag polysulfide |
| Pot life | Approximately 1 hour at 73 F |
| Tack-free | Approximately 6 hours at 73 F |
| Movement | ±25% |
| Shore A | Approximately 25 to 30 |
| Cure | Approximately 7 days at 73 F |
Product documents: Sika Duoflex NS Product Data Sheet (PDF)
Frequently Asked Questions
What joint jobs suit Sika Duoflex NS?
Vertical and overhead static or dynamic joints in concrete and masonry, including water treatment, bridges, secondary containment, and fueling environments.
What pot life should crews plan for Sika Duoflex NS?
Approximately 1 hour at 73 F and 50% RH. Mix the entire unit; do not batch down.
What movement capability does Sika Duoflex NS hold?
±25% with Shore A hardness approximately 25 to 30.
What ASTM class does Sika Duoflex NS meet?
ASTM C920 Type M, Grade NS, Class 25, Use T2, NT, I, A, G, M, and O.
What drinking-water status does Sika Duoflex NS carry?
It is NSF/ANSI 61 compliant for drinking-water system components after full cure.
What size is Sika Duoflex NS?
The unit is 1.5 gallons, part 456162.
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