Sika® Duoflex NS
$345.63
Sika® Duoflex NS is a two component, non-sag, premium quality polysulfide sealant, specifically designed for vertical and overhead surfaces.
- Tough, elastic, rubber-like seal.
- Remains flexible with expansion and contraction of building component, based on good joint design.
- Stays resilient within a wide temperature range.
Description
Usage
Sika® Duoflex NS may only be used by experienced professionals. Sika® Duoflex NS is suitable for either exterior or interior use to seal both static and dynamic joints.
- Concrete and precast concrete joints in water treatment & storage facilities, bridges, roadways, and warehouse floors
- Expansion and control joints in concrete and masonry walls and ceilings
- Joints within secondary containment areas
- Joints located in gas station and refueling environments
Advantages
- Tough, elastic, rubber-like seal.
- Remains flexible with expansion and contraction of building component, based on good joint design.
- Stays resilient within a wide temperature range.
- Excellent resistance to water, oils, grease, most solvents, mild acids and alkalis. Check Sika’s Chemical Resistance Chart for the use of Sika® Duoflex NS in a particular chemical environment.
- Effective under constant immersion or saturated conditions, when suitably primed with Sika® Duoflex Primer-5050.
Packaging
1.5 gallon (5.7 liter) unit with both Components ‘A’ and ‘B’ contained in a pail; 60 units per pallet
Color
Component ‘A’: Gray liquid / Component ‘B’: Gray liquid
Components ‘A’ and ‘B’ mixed: Bronze (i.e. Brownish Gray) non-sag sealant
Product Details
APPROVALS / STANDARDS
- Sika® Duoflex NS meets ASTM C920, Type M, Grade NS, Class 25, Use T2 (requiring appropriate total recessed joint design considerations), NT, I, A, G, M and O.
- Compliant with NSF/ANSI 61 “Drinking Water System Components – Health Effects” for potable water contact after full cure (reference: IAPMO R&T File No. K-12483).
Application
Mixing Ratio
Mix entire unit. Do not batch down.
Ambient Air Temperature
40 – 100 °F (4 – 38 °C) Sika® Duoflex NS should be installed when joint is at midrange of its anticipated movement.
Substrate Temperature
40 – 100 °F (4 – 38 °C) Sika® Duoflex NS should be installed when joint is at midrange of its anticipated movement.
Substrate Moisture Content
Beware of surface condensation! To avoid dew point conditions during application, substrate temperature must be at least 5 °F (3 °C) above measured dew point temperature.
Pot Life
| Approximately 1 hour | 73 °F (23 °C), 50% R.H. |
Cure Time
| 7 days | 73 °F (23 °C), 50% R.H. |
Tack Free Time
| Approximately 6 hours | 73 °F (23 °C), 50% R.H. |
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