Körapop 240-2K is a two-component elastic adhesive and sealant based on silane-modified polymer chemistry. It is a boosted, high-strength, and non-sag product that offers both high strength and flexibility. The adhesive also provides high adhesion without the need for primers on many substrates. Additionally, it boasts outstanding resistance to UV, weather, and aging.

Chemical Family: Silanes

Product Type: 2K (2 component) Adhesive, 2K (2 component) Sealant, Reactive Adhesive, Reactive Sealant

Application Area: HVAC Applications, Metalworking Equipment, Travel Trailers

Compatible Substrates & Surfaces: Aluminum Alloys, Glass, Metal, Painted Surfaces, Plastics, Steel, Wood

Features: Excellent Elasticity, Excellent Moisture Resistance, Excellent Strength, Exceptional UV Resistance, Good Cold Resistance, Good Flexibility, Good Sagging Resistance, Good Weather Stability, Heat Resistance, High Flexibility, Improved Ageing Resistance, Paintable, UV Resistant

Technical Data Sheet
Message our experts with questions
Robert Blackstone avatar

Robert Blackstone

Global Leader - Inside Sales

Please reach out to me with any questions, I am happy to assist you in finding the right product or learning more about our storefront

Enhanced TDS

Identification & Functionality

Features & Benefits

Applications & Uses

Application Area
Compatible Substrates & Surfaces
Cure Method
Application Information


Fields of Application


Industrial assembly



Suitable Substrates

Various galvanized steels

Various aluminum alloys

Various steel alloys


Thermoplastics (except PE, PP, PTFE)

Various composite materials (e.g. CFRP, GFRP)


Mineralic materials

Coated surfaces

Non-sagging Pasty

Surface Requirements

Free of grease

Surface Cleaning

Körasolv GL
Körasolv PU
Körasolv WL
Adhesion Promoter (absorbing surface)

Körabond HG 74 E

Adhesion Promoter (non absorbing surface)

Körabond HG 83

Application Method

Using side-by-side cartridge with static mixer
via two part mixing and metering systems

Product Overpaintability

Wet-in-wet (depending on paint)

Product is free of Solvents


Cleaner for Tools

Körasolv GL
Körasolv PU


Resistance against UV Radiation

Not suitable for glass bonding with
permanent UV radiation to the bonding area.
Please ask your local sales office for
products suitable for such applications

Stress Cracking

Preliminary tests must be carried out on
plastics with a tendency to stress cracking.

Compatibility with Polystyrene Foams

Not suitable for bonding polystyrene foams.
Please ask your local sales office for
products suitable for such applications.


For some substrates the use of mechanical pretreatment and/or cleaner or primer is necessary to achieve good adhesion.


Low temperatures can cause a temporary increase in viscosity resulting in reduced extrusion and slower curing rates.

Cleaning Instructions

Clean tools immediately after use. Once cured, the material can only be removed mechanically. Appropriate cleaners are listed in the product properties.


The required thickness of the adhesive layer depends on the expected maximum strength and joint movement. We recommend a minimum layer thickness of 2 mm.


Physical Form
Physical Properties
ValueUnitsTest Method / Conditions
Glass Transition Temperature-64.0°CDIN EN ISO 6721-1
Cured Properties
ValueUnitsTest Method / Conditions
Pot Life (with Köracur 310 N)10.0min-
Pot Life (with Köracur 310 L)16.0min-
Pot Life (with Köracur 310 SL)26.0min-
Change in Volume-3.0%DIN EN ISO 10563
Hardness (after 14d)54.0-DIN ISO 7619-1, Shore A
Tensile Strength2.8MPaDIN EN ISO 527
Elongation at Break350.0%DIN EN ISO 527
Lap Shear Strength (substrates: aluminum/aluminum)3.0MPaDIN EN 1465
Tear Strength20.0N/mmASTM D624
Processing Parameters
ValueUnitsTest Method / Conditions
Mixing Ratio (Part A:Part B, by volume)10:1--
Processing Temperature5 - 35°C
Recommended Minimum Layer Thickness2.0mm-
Recommended Operating Conditions
ValueUnitsTest Method / Conditions
Service Temperature- 60 - 90°C-
Short-Term Temperature Resistance (60 min)150.0°C-
Physical Properties

Part A Körapop 240

Physical Properties

Density 1.4 g/cm3 DIN EN 542
Solid-content by weight 100%  

Processing Guidelines and Parameters

Storage Temperature 5 °C to 25 °C  


Part B Köracur 310 N

Physical Properties

Density 1.49 g/cm3 DIN EN 542

Processing Guidelines and Parameters

Storage Temperature 15 °C to 25 °C  


Part B Köracur 310 L

Physical Properties

Density 1.49 g/cm3 DIN EN 542

Processing Guidelines and Parameters

Storage Temperature 15 °C to 25 °C  


Part B Köracur 310 SL


Physical Properties

Density 1.49 g/cm3 DIN EN 542

Processing Guidelines and Parameters

Storage Temperature 15 °C to 25 °C  

Technical Details & Test Data

Curing of Körapop 240-2K

Körapop 240-2K - Curing of Körapop 240-2K

Curing of Körapop 240-2K​​​​​​​ with different boosters, build up of Shore A

Packaging & Availability

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

Storage & Handling

Storage Conditions

Körapop 240-2K should be used within the shelf life specified on the packaging. The storage stability only applies to material stored under appropriate conditions (original unopened containers, recommended storage temperature).