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Sika

Sika Sikaflex-140 Construction

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$7.63

Color: Gray
In Stock (5 available)

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Sika Sikaflex-140 Construction

$7.63

$7.63

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Color: Gray
  • Gray
  • Cool White

Sika Sikaflex-140 Construction

A 1-part polyurethane elastic joint sealant for durably sealing connection and movement joints in concrete and masonry facades. Bubble-free curing, ±25% movement capability, and excellent adhesion to most construction materials. LEED® v4 compliant.

Overview

Specifications

Property Value
Type 1-component polyurethane elastic joint sealant
Density (1.25 ± 0.1) kg/L (ISO 1183-1)
Shore A Hardness 35 (cured 28 days at +23°C / 50% R.H.)
Secant Tensile Modulus 0.30 N/mm² at 60% elongation (cured 28 days)
Elastic Recovery 70% at 100% elongation for 24 hours
Tear Propagation Resistance 6.0 N/mm (cured 7 days)
Elongation at Break 800% at −20°C (cured 7 days)
Movement Capability ±25% (ASTM C719)
Service Temperature −40°C min / +70°C max
Skin Time ~120 minutes at +23°C / 50% R.H.
Tooling Time ~100 minutes at +23°C / 50% R.H.
Curing Rate ~2 mm / 24 hours at +23°C / 50% R.H.
Shelf Life 12 months from date of production
Storage Dry, +5°C to +30°C, original sealed packaging

Usage

  • Interior and exterior joint sealing on building facades
  • Around window and door frames
  • Around precast and prefabricated elements
  • Floor and wall construction joints
  • General purpose construction sealant

Advantages

  • Easy to extrude and tool
  • Movement capability of ±25% (ASTM C719)
  • Good adhesion to many construction materials
  • Bubble-free curing
  • Can be overpainted with most conventional paint systems
  • LEED® v4 compliant – contributes to Indoor Environmental Quality (EQ) Credit: Low-Emitting Materials

Packaging

  • 600 ml foil pack
  • Box of 20 foil packs

Colour

  • Grey
  • White

Product Details

Product Information

Property Detail
Composition Sika i-Cure® polyurethane (1-component)
Product Declaration ASTM C920-18: Type S, Grade NS, Class 25, Use T1, NT, M
Shelf Life 12 months from date of production
Storage Conditions Dry, +5°C to +30°C, original sealed packaging
Density (1.25 ± 0.1) kg/L (ISO 1183-1)

Application

Application Information

Parameter Value
Ambient Temperature +5°C min / +40°C max
Substrate Temperature +5°C min / +40°C max (min. 3°C above dew point)
Skin Time ~120 minutes at +23°C / 50% R.H.
Tooling Time ~100 minutes at +23°C / 50% R.H.
Curing Rate ~2 mm / 24 hours at +23°C / 50% R.H.

Application Steps

  • Substrate Preparation: Surface must be sound, clean, dry, and free from dirt, oil, grease, cement laitance, sealant residues, and poorly bonded coatings.
  • Priming – Non-Porous Substrates: Apply Sika® Aktivator-205. For other metals, follow with Sika® Primer-3 N. For PVC, use Sika® Primer-215.
  • Priming – Porous Substrates: Prime with Sika® Primer-3 N or Sika® Primer-115.
  • Application: Insert backing rod, apply sealant, and tool firmly against joint sides immediately using Sika® Tooling Agent N.
  • Overpainting: Allow full cure before overpainting. Test paint compatibility before full application.

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