IRS 2012-1 Low Density Light Weight Epoxy Potting Compound

IRS 2012-1

About IRS 2012-1 Low Density Light Weight Epoxy Potting Compound

Also available to buy online at  Available at

IRS 2012-1 is a very low density, light weight epoxy resin system with excellent physical properties. It can be used in systems where weight is critical (e.g. auto sport, motor racing, aerospace). IRS 2012-1 also has good transparency to RF signals or radio signals.

Features & Benefits

  • Low density
  • Contains advanced light weight fillers
  • Excellent electrical properties
  • Chemical resistance to solvents, oils, fuels, acids, bases and hydraulic fluids
  • Good mechanical properties
  • Low cure shrinkage
  • Has uses in radio frequency applications, RF transparent
  • Available in easy-to-use twinpacks


Part number change: as of version 6.0, October 2021, the part number of this product changed from IRS 2012 to IRS 2012-1. This is due to an unavoidable change in a formulation component. This change does not affect the product data-sheet specifications. The new formulation has passed internal testing and is deemed to be equivalent.


Typical properties
Mix ratio 100:45 resin to hardener by volume
70:30 resin to hardener by weight
Mixed viscosity 11,000 cps
Pot life (100g mix) 1 hour @ 23°C
Cure schedule Bondline temperature:
24 hours
4 hours
Density 0.6 g/cm³
Shore hardness D40
Tensile strength 4 MPa
Crush resistance 50 MPa (estimated)
Operating temperature -55°C to 150°C
200°C short term
Chemical resistance Particularly resistant to fuels, lubricating oils, acids and bases.
Also resistant to hydraulic fluids, solvents
Dielectric strength 15kV/mm
Volume resistivity 1011 ohm-cm
Colour Black
Shelf life 12 months


Safety Data Sheets
For the latest SDS for this product, please e-mail

Other Information

See how one customer got results from IRS 2012-1 for an electronics potting application in this Case Study:

Potting of vehicle tyre pressure monitoring sensors using IRS 2012-1. Application Insight – Tyre Pressure Sensor Potting

Potting vehicle tyre pressure monitoring sensors using IRS 2012-1.

All Downloads

Filename Size Download
IRS 2012-1 Product Data Sheet 0.11MB Download
Correcting Resin Separation in IRS2012 Low Density Potting Compound 0.19MB Download
Application Insight - Tyre Pressure Sensor Potting 0.11MB Download

Ordering Information

IRS 2012-1 is available in twinpacks or in bulk.

IRS 2012 Twinpack

The twinpack sachet is a clear film sachet, with the resin and hardener separated by a removable clip and rail divider. Click here for twinpack mixing instructions.

Part number Description
Click here to buy on
Low Density Epoxy Potting Compound – 100 gram twinpack (approx 167 ml)
Click here to buy on
Low Density Epoxy Potting Compound – 300 gram twinpack (approx 500 ml)

For optimal results, store away from strong alkalis, oxidising materials, strong acids and amines. The conditions must prevent the formation of sparks and static electricity, and the product must avoid excessive heat for prolonged periods of time while in storage. Keep only in the original container. Keep container upright and tightly closed, in a cool, well-ventilated place. Protect containers from damage. Bund storage facilities to prevent soil and water pollution in the event of spillage. The storage area floor should be leak-tight, jointless and not absorbent.


Let’s start by talking about your application

orange_phone01865 842842 orange_email

  • If you’re in the UK, knowing your postcode would help us get in touch even more quickly. If you’re outside the UK, please indicate your country.

    Any information that you submit using this form will be processed according to our privacy policy.

  • This field is for validation purposes and should be left unchanged.

  • Last updated: January 2024
  • Version: 6.4

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.