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About IRS 2126 Fast Cure Flexible Epoxy Adhesive

IRS 2126 Fast Cure Flexible Epoxy Adhesive is a high performance, thixotropic black resin system. Its combination of flexibility and high adhesive strength lends itself to many high technology bonding applications. A two part system with a simple 1:1 mix ratio, it is supplied in a convenient side-by-side double syringe cartridge, complete with static mixing nozzles, or in small twinpacks.

Features & Benefits

  • Cures to a flexible polymerIRS2126
  • Sets in minutes at room temperature
  • Will bond to most substrates, including metal, glass, wood, rubber and many plastics
  • Good adhesion to flexible substrates
  • Good temperature and oil resistance
  • Good shock resistance
  • Conveniently packaged – supplied in 50ml dual cartridge for easy application, or in small twinpacks
  • Long shelf life – 12 months from date of manufacture


  • Cable harness assemblies, wiring, cable joints & terminations, heat-shrink sealing
  • Electronics sealing and small potting
  • Structural bonding


Mix ratio 1:1 resin to hardener
Viscosity Resin: ~ 17,000 cps
Hardener: high (thixotropic)
Mixed viscosity ~ 25,000 cps
Specific gravity Resin: 1.16
Hardener: 1.18
Colour Black
Cure schedule
10 gram mix at 23°C
Pot life 5-10 minutes
Handling strength 20 minutes
Full cure 2 hours
Maximum recommended mix 25 grams
Cured properties
Measurements taken at 23°C
Hardness, Shore A 80
Lap shear strength (Al/Al) 9MPa
Temperature range -40 to 150°C
Peel strength (neoprene/neoprene) 50N/25mm


Lap shear adhesion  
Stainless steel 2.1 MPa
Aluminium 6082 T 1.6 MPa
Polycarbonate 1.3 MPa
PMMA 0.2 MPa
Nylon 6/6 0.9 MPa
ABS 0.6 MPa
Glass 1.5 MPa

Lap shear graph IRS 2126


Safety Data Sheets
For the latest SDS for this product, please e-mail msds@intertronics.co.uk

Other Information

Technical Guide - Adhesive Problem? What's the Cure? Adhesive Problem? What’s the Cure?

A guide to adhesive bonding, considering structural bonding and the criteria involved for successful assembly.


See how the IRS 2126 works as part of a real application in this adhesive Case Study:

Case Study - IRS2125 Carrie Reichardt Flexible epoxy adhesive gives strength and durability to mosaic art

British artist Carrie Reichardt relies on our structural adhesives to ensure a strong bond in her creative pieces.


Our Technical Bulletins & Articles page has links to:

All Downloads

Filename Size Download
Double Syringe Cartridge Instructions 0.19MB
Twinpack Mixing Instructions 0.17MB
How Much Adhesive Will I Need? 0.15MB
Adhesive Problem? Whats the Cure? 0.36MB

Ordering Information

IRS 2126 is available in a convenient side-by-side double syringe cartridge, or in small twinpacks.

The IRS 2126-50KIT contains a 50 gram cartridge of epoxy, a dispensing gun and three static mixing nozzles. It is ideal for product evaluations or small quantity users.

Part number Description
IRS2126-50G Fast Cure Flexible Epoxy Adhesive, Double Syringe Cartridge, 50 gram
IDM805001 Dispensing Gun
IDM2N10 Static Mixing Nozzle (pkg 10)
IRS2126-50KIT Fast Cure Flexible Epoxy Adhesive Kit – Contains 50 gram cartridge of epoxy, a dispensing gun and three static mixing nozzles
IRS2126-10G Fast Cure Flexible Epoxy Adhesive, Twinpack, 10 gram

Storage: Store in the original unopened containers under cool dry conditions between 15° and 25°C.


Next Steps

Our technical team are on hand to discuss your application requirements. Click here to get in touch.

Find out more information on how to purchase.

  • Last updated: July 2021
  • Version: 3.6

Statements, technical information and recommendations contained herein are based on tests we believe to be reliable but they are not to be construed in any manner as warrantees expressed or implied. The user shall determine the suitability of the product for his intended use and the user assumes all risk and liability whatsoever in connection therewith.