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Sika Sikaflex NP 1 Grey 20oz Sausage
Sikaflex NP 1 Grey is a one-component polyurethane in a 20 oz ProPak. It seals window frames and long expansion joints and typically bonds without a primer on concrete and masonry.
- Grey 20 oz ProPak for window frames and long joint runs
- One-component formula that skips mixing
- 18-month unopened ProPak shelf life
$13.22
Availability:
Out of stock
Sikaflex NP 1 Grey 20 oz
Sikaflex NP 1 is a one-component moisture-curing polyurethane joint sealant. This Grey 20 oz ProPak (part 805579) is for aluminum and wood window frames, storefronts, and long expansion joints. It holds plus or minus 35% movement and typically bonds without a primer on concrete and masonry. The ProPak is ready to place with a caulk applicator, with no mix step on the job.
Key Features
- One-component moisture-curing polyurethane
- Grey 20 oz ProPak, part 805579
- No mixing, which cuts labor on long joint runs
- Extrudability passes in 3 seconds (ASTM C603)
- Aluminum and wood window frames
- Treated wood only after 6 months of weathering
Applications
- Aluminum and wood window frames
- Storefront assemblies and long expansion joints
- Interior and exterior joints above and below grade
- Panel walls and precast units
Technical Specifications
| Property | Value |
|---|---|
| Manufacturer | Sika |
| Product | Sikaflex NP 1 |
| Part no. | 805579 |
| Unit | 20 oz ProPak |
| Color | Grey |
| Movement | +/- 35% (ASTM C719) |
| Extrudability | 3 seconds (ASTM C603) |
| Joint depth | 1/2 the width; 1/4 to 1/2 inch at midpoint |
| Shelf life | 18 months (sausage) |
| Pack | 20 ProPaks per carton |
Product documents: Sikaflex NP 1 Product Data Sheet (PDF)
Frequently Asked Questions
What size is Sikaflex NP 1 Grey 20 oz?
The ProPak is 20 oz (590 ml), part 805579, 20 per carton.
What mix step does Sikaflex NP 1 Grey 20 oz need?
None. It is a one-component moisture-cure polyurethane, so there is no mixing on the job.
What extrudability does Sikaflex NP 1 Grey 20 oz pass?
3 seconds (ASTM C603). It is placed with a professional caulk applicator and tooled dry.
What treated-wood wait does Sikaflex NP 1 Grey 20 oz need?
At least 6 months of weathering. It is not placed over freshly treated wood.
What window-frame work uses Sikaflex NP 1 Grey 20 oz?
Aluminum and wood window frames, plus storefront assemblies and long expansion joints.
What joint depth does Sikaflex NP 1 Grey 20 oz want?
Half the joint width at the midpoint, always between 1/4 inch and 1/2 inch. Closed-cell backer rod or a bond breaker keeps that depth in deep joints.
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