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Euclid Eucolastic 1NS 10oz Cartridge Limestone
Euclid Eucolastic 1NS is a polyurethane sealant designed for sealing joints in concrete and masonry structures, offering exceptional adhesion, flexibility, and weather resistance. Extremely durable in dynamic joints, offering persistent adhesion once fully cured.
- Provides a secure seal to prevent water infiltration.
- Accommodates joint movement for enhanced flexibility.
- Withstands outdoor exposure and UV radiation.
$5.78
Availability:
In stock
( 28 Available )
SKU
18217
Euclid Eucolastic 1NS – Limestone 10.1 oz Cartridge
Eucolastic 1NS is a single-component, non-sag, low-modulus polyurethane hybrid joint sealant for interior and exterior construction joints. It skins rapidly, cures to a tough flexible seal with ±35% movement capability, and maintains adhesion through temperature cycles. The limestone color matches light concretes and masonry and is suitable for use above and below grade.
Key Features
- Non-sag, moisture-cured hybrid polyurethane for vertical and overhead joints.
- Skins rapidly; tack-free in about 3–4 hours at 75°F.
- Movement capability ±35% for dynamic joints (ASTM C719).
- Maintains cohesive and adhesive bond during thermal cycling.
- Paintable after cure; good color stability.
- Service temperature range −40°F to 185°F.
- Meets ASTM C920 Type S, Grade NS, Class 35; TT-S-00230C Type II Class A; CAN/CGSB 19.13.
Applications
- Concrete control and expansion joints; precast concrete panels.
- Window and door perimeters; masonry and EIFS details.
- Interior and exterior joints above and below grade.
- General construction sealing where a flexible, durable joint seal is needed.
Technical Specifications
| Color (this item) | Limestone |
| Chemistry | Silane-terminated polyurethane hybrid, moisture cure |
| Movement Capability | ±35% (ASTM C719) |
| Rheology | Non-sag, <0.1875 in (ASTM C639) |
| Tack-Free Time | 5–6 hours (ASTM C679 lab value); skins ~1 hour |
| Hardness | Shore A ~25 (ASTM C661) |
| Adhesion-in-Peel to Concrete | 18–22 pli; no adhesion loss (ASTM C794) |
| Service Temperature Range | −40°F to 185°F |
| Application Temperature | Substrate ≥40°F and rising; <150°F |
| Joint Design / Coverage | 1 cartridge yields ~24 LF of 1/4 in × 1/4 in joint; use backer rod or bond breaker |
| Cleanup (uncured) | Euco Solvent or xylene; remove cured sealant mechanically |
| Packaging (this item) | 10.1 oz cartridge; 30 cartridges per case |
| Shelf Life | 18 months in unopened container |
| Standards / Compliance | ASTM C920 Type S, Grade NS, Class 35; ASTM C1248; TT-S-00230C Type II Class A; CAN/CGSB 19.13 |
Frequently Asked Questions
Do I need a primer?
Usually no. Perform a field adhesion test on non-porous substrates. Use Eucolastic Primer when the sealant will be in continuous water immersion after cure.
What joint dimensions are recommended?
Minimum joint width 1/4 in. For joints 1/4–1/2 in wide, use 1:1 width-to-depth. For joints 1/2–1 in wide, depth should be half the width with a maximum 1/2 in sealant depth.
When can it be painted?
After full cure. Always test coating compatibility on a small area first.
What are the storage and handling notes?
Store at room temperature before use. Apply only to clean, dry substrates. Do not apply to damp or wet joints.
Where can it be used?
Interior or exterior, above or below grade, including concrete, precast, masonry, EIFS, and around windows and doors.
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