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About IRS 3078 Polyurethane Potting Compound

IRS 3078 Polyurethane Potting CompoundIRS 3078 Polyurethane Potting Compound is a semi-rigid, room temperature curing and electrically insulating black polyurethane potting compound. The material is low viscosity, flowable and available in convenient side-by-side double syringe cartridges. It offers high adhesion and impact resistance, with a resilient Shore D 65 hardness.

IRS 3078 may be used as a low viscosity adhesive.

Features & Benefits

  • Flowable, semi-thixotropic
  • High impact resistance
  • Good electrical insulation properties
  • Room temperature curing
  • High adhesion
  • Packaged in convenient side-by-side cartridges


  • Potting and encapsulating electronic assemblies
  • Bonding of dissimilar materials
  • Sealing road studs


Mix ratio by weight 0.90:1
Mix ratio by volume 1:1
Viscosity 2,000 mPas
Colour Black
Specific gravity 1.10
Working life 6 minutes @ room temperature
Cure schedule Bondline temperature
RT (20-25°C)
24 hours – full cure
12 hours – full cure
6 hours – full cure
Typical properties
Hardness, Shore D 65
Temperature range -40 to +130°C
Thermal conductivity > 0.2 W/mK
Comparative tracking index >600 V
Electric strength 10 kV/mm
Volume Resistivity 5 x 1014 ohm.cm
Lap shear strength  
Aluminium to Aluminium 14 Kg/cm2
Stainless Steel to Stainless Steel 12 Kg/cm2
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.


Our Technical Bulletins & Articles page has links to:

All Downloads

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

Ordering Information

IRS 3078 is available in a convenient side-by-side double syringe cartridge.

The IRS3078-50KIT contains a 50ml cartridge of epoxy, a Syringe Gun and three static mixing nozzles. It is ideal for product evaluations or small quantity users.

Part number Description
IRS3078-50ML Polyurethane Potting Compound, Double Syringe Cartridge, 50ml
IRS3078-200ML Polyurethane Potting Compound, Double Syringe Cartridge, 200ml
IDM805001 Dispensing Gun for 50ml Cartridge
DMDM2X200-01-52-01 Dispensing Gun for 200ml Cartridge
IDM2N10 Static Mixing Nozzle (pkg 10)
IRS3078-50KIT Polyurethane Potting Compound Kit – contains 50ml cartridge of epoxy, a Syringe Gun and three static mixing nozzles

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: 1.1

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.