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About IRS 3078 Polyurethane Potting Compound

Also available to buy online at  Available at Intertronics.shop

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
Surface resistivity 6.9×1015 Ω
Peak exotherm 65°C
Impact strength 8.33 KJ/m2
Max elongation 23.5%
Permittivity 3.25 KHz


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


As of 24 August 2023, adequate training is required before industrial or professional use of this product.

Other Information

See IRS3078 as part of a real application in this potting compound Case Study:

Potting compound and accurate, reliable dispensing for automotive lighting Potting compound and accurate, reliable dispensing for automotive lighting

Requiring a potting compound which could provide environmental protection to their high-powered outdoor LED lights, lighting manufacturer Venta Global selected IRS 3078 and a metering, mixing, and dispensing system to create a straightforward and repeatable process.


Our Technical Bulletins & Articles page has links to:

Front cover of Structural Adhesives selector guide showing adhesive being dispensed with a handheld dispensing gun Structural Adhesives Selector Guide

Start your adhesive selection process by reading our Structural Adhesives Selector Guide, detailing different chemistries and material specifications.

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.


All Downloads

Filename Size Download
IRS 3078 Product Data Sheet 0.17MB Download
Double Syringe Cartridge Instructions 0.19MB Download
How Much Adhesive Will I Need? 0.15MB Download
Adhesive Problem? Whats the Cure? 0.38MB Download
Structural Adhesives Selector Guide 1.12MB Download

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
Click here to buy on intertronics.shop
Polyurethane Potting Compound, Double Syringe Cartridge, 50ml
Click here to buy on intertronics.shop
Polyurethane Potting Compound, Double Syringe Cartridge, 200ml
IRS3078-5KG Polyurethane Potting Compound, 5KG bulk kit
IDM805001 Dispensing Gun for 50ml Cartridge
IDM812001 Dispensing Gun for 200ml Cartridge
IDM2N10 Static Mixing Nozzle for 50ml Cartridges (pkg 10)
IDMSMTS9-24 Static Mixing Nozzle for 200ml Cartridges (pkg 10)
Click here to buy on intertronics.shop
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.


Let’s start by talking about your application

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  • Last updated: January 2024
  • Version: 1.6

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.