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.
Euclid Eucolastic 1NS is a single-component, non-sag, moisture-cured polyurethane hybrid sealant engineered for dynamic joint sealing in vertical and overhead applications. Formulated with a silane-terminated polymer, this advanced sealant offers superior performance over standard polyurethanes, with outstanding flexibility and adhesion. Eucolastic 1NS delivers ±35% movement capability and remains bonded through thermal cycles. It skins quickly, becomes tack-free within hours, and can be painted once cured. Ideal for concrete, precast panels, EIFS, window perimeters, and other critical joints, it can be used both above and below grade, indoors or outdoors.
Property | Value |
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Movement Capability (ASTM C719) | ±35% |
Shore A Hardness (ASTM C661) | 25 |
Tack-Free Time (ASTM C679) | 5 to 6 hours |
Skin Time | 1 hour |
Adhesion to Concrete (ASTM C794) | 18–22 pli – No adhesion loss |
Temperature Range (Service) | -40°F to 185°F (-40°C to 85°C) |
Shelf Life | 18 months (unopened) |
Coverage (10.1 oz cartridge) | 24 linear feet at 1/4" x 1/4" |
Compliances | ASTM C920 Class 35, TT-S-00230C, CAN/CGSB 19.13-M87 |
Can Eucolastic 1NS be applied to damp surfaces?
No, the substrate must be clean and dry at the time of application to ensure optimal adhesion and cure performance.
Is primer required for bonding?
Typically, no primer is required on porous surfaces. However, priming may be necessary on smooth or non-porous substrates, especially when exposed to water service.
Can Eucolastic 1NS be painted?
Yes, it can be painted once fully cured using compatible coatings.
Brand | Euclid Chemical |
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Color | White |
Size | 10oz |
Manufacturer | Euclid Chemical |