Körapur® 128 S is an elastic one-component adhesive and sealant used for bonding in the manufacturing of containers, vehicles, vehicle bodywork, air conditioning and heating equipment, metalwork, and other applications. It exhibits good adhesion to primed and painted metals, aluminum and steel, wood, and duroplastics. It also offers good resistance to humidity and weathering.

Chemical Family: Polyurethanes (PU)

Product Type: 1K (1 component) Adhesive, 1K (1 component) Sealant, Reactive Adhesive, Reactive Sealant

Application Area: Air Conditioning , Appliances, Containers, HVAC Applications, Heating Equipment, Metal Parts, Vehicles

Compatible Substrates & Surfaces: Aluminum, Metal, Painted Surfaces, Steel, Wood

Features: Excellent Elasticity, Excellent Humidity Resistance, Excellent Substrate Adhesion, Good Adhesion, Good Substrate Wetting, Good Weather Stability, High Elongation, High Flowability, Paintable, Self-Leveling, Temperature Resistance

Technical Data Sheet
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Enhanced TDS

Identification & Functionality

Chemical Family

Features & Benefits

Product Benefits
  • Good adhesion to primed and painted metals, aluminium and steel, wood and duroplastics
  • Good resistance to humidity and weathering
  • Overpaintable after curing
  • Resistant to temperatures from -40°C to +90°C (up to +120°C for short intervals)
  • Self-levelling
  • Can be used with booster Köracur 110 S

Applications & Uses

Compatible Substrates & Surfaces
Cure Method
Processing
  • Good adhesion to primed and painted metals, aluminum and steel, wood and duroplastics
  • Good resistance to humidity and weathering
  • Overpaintable after curing
  • Resistant to temperatures from -40°C to +90°C (up to +120°C for short intervals)
  • Self-leveling
  • Can be used with booster Köracur 110 S

Properties

Physical Form
Technical Data
ValueUnitsTest Method / Conditions
Densityapprox. 1.2g/cm³DIN EN ISO 1183-1
Skin Formation Time30.0minDIN 50014
Curing ((first day)3.0mmDIN 50014
Change in Volumemax. 1%DIN 52 451
Hardness40.0-ISO 868/DIN 53 505, Shore A
Elongation at Tear500.0%ISO 527 / DIN 53 504
Tensile Strength1.5-ISO 527 / DIN 53 504
Tear Propagation Strength5.0N/mmISO 34 / DIN 53 515
Building Material ClassB2-DIN 4102 part 1 + part 4

Packaging & Availability

Regional Availability
  • Asia Pacific (Excluding Russia)
  • Australia
  • Canada
  • China
  • Europe (Excluding Russia)
  • Japan
  • Korea
  • Malaysia
  • North America
  • Philippines
  • USA

Storage & Handling

Shelf Life
12 Months (Cartridges and sachets), 9 Months (Drums)
Storage Condition
  • Do not store at temperatures above +25°C.
  • Precautions: When processing Körapur 128 S avoid direct contact with the uncured material. Safety gloves are recommended.