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PERMABOND ES5691

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1K epoxy with IR/hot air curing — without oven

PERMABOND ES5691 is a thermosetting, one-component epoxy adhesive with excellent adhesion to metal surfaces and composites, conveniently applied without mixing. It offers high shear and peel strength, excellent shock resistance, high temperature resistance, and good chemical resistance, and is thixotropic with low flow tendency. Key properties according to the datasheet: shear strength on steel 27 to 41 N/mm², hardness over 75 Shore D, dielectric strength 17.7 kV/mm; curing is accelerated by an infrared lamp or hot air.

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  • Container
  • Color
  • Country of origin
  • Chemical group
  • Viscosity (adhesives)
  • Viscosity 2rpm
  • Viscosity at 20 rpm
  • Operating temperature (°C)
  • Hardness (Shore D)
  • Storage Temperature (°C)
  • Maximum gap fill (mm)
  • Thermal conductivity
  • 130° C
  • 150°C
  • 160°C
  • Steel
  • Aluminum
  • Zinc

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Metal ceramic ferrites

 
General Terms and Conditions

Shipping usually within 1 to 3 business days
(Availability confirmed after order)

Express logistics. Fast and reliable within Switzerland & Europe

From Swiss stock Dispatch within 24h Batch certificate Invoice 30 days (B2B) Technical advice
Shipping & Delivery

Usually 1 to 3 business days

Availability is confirmed after order receipt.

Express logistics within Switzerland & Europe.

Terms and Conditions →

Product data

HS Code: 3506.9190000

HS Code: 3506.9190000

PERMABOND ES5691
PERMABOND ES5691
Permabond · Permabond Engineering Adhesives Ltd ·

Permabond ES5691 is a 1K epoxy that can be cured with an infrared lamp or hot air blower — the flexible heat-cure option without an industrial oven.

Unlike standard 1K epoxies that require an industrial oven, ES5691 can be cured with a simple IR lamp or hot air blower — opening up applications in workshops, mobile service operations and small manufacturing plants without heat-cure infrastructure.

APPLICATION PROFILE

One-component epoxy curing via infrared lamp or hot air — the flexible heat-cure option without an industrial oven. Ideal for mobile applications, repairs, and workshops without heat-cure infrastructure.

Permabond ES5691 in figures
1K
Single-part
IR/Hot air
Curing
No pot life
Direct
Mobile
Without an oven

What distinguishes Permabond ES5691

IR/hot air curing
Without an industrial oven — lamp or blower.
1K System
No mixing.
Mobile use
Workshops, service, on-site repair.
No pot life
Remains liquid until heated.
Flexible
Adaptation to different curing methods.
Solvent-free
100% reactive.

What is Permabond ES5691 used for?

Workshops without an industrial furnace
An IR lamp or hot air blower is sufficient.
Mobile service deployments
On-site repair.
Small and medium-sized enterprises
Without heat cure infrastructure.
Repair and maintenance
Flexible curing.
Prototype construction
Test applications without equipment.

Processing

1
Clean surfaces
Prepare bonding surfaces clean, dry, and free of grease — degrease with Permabond Cleaner A. Lightly sand aluminum and copper to remove the oxide layer.
2
Apply adhesive directly
Apply Permabond ES5691 directly from the container without mixing — as a 1K system, there is no pot life limitation. Avoid air bubbles.
3
Join and fix components
Join components with sufficient pressure. Use a clamping device or clamp to prevent the parts from moving during curing.
4
Perform heat curing
Curing is achieved through heat application — heat curing with an infrared lamp or hot air. Typical conditions: 30 minutes at 150 °C in an industrial oven or with equivalent IR/hot air curing. See TDS for exact values.
5
Final strength after cooling
After heat curing, allow the component to cool down — full strength is achieved immediately after cooling. Unlike 2K epoxies at room temperature, there is no 24-hour waiting period.
Data Sheets & Safety Data Sheet
Complete TDS and SDS in DE, EN, FR — view or download directly.
To the documents →

Recommended accessories

Permabond Cleaner A Aerosol
Spray cleaner for quick preparation of bonding surfaces before applying the 1K heat-cure epoxy.
To the product →
Permabond ES578 — UL94-V0
Flame-retardant 1K epoxy per Underwriter's Laboratory standard — for safety-critical industrial applications.
To the product →
Permabond ES566 — High Temperature
High-temperature resistant 1K epoxy for demanding thermal applications.
To the product →
Permabond ES5691 — IR/Hot Air
1K epoxy with IR lamp or hot air curing — flexible without an industrial oven.
To the product →

Important Notes

Important Notes
IR lamp or hot air blower required. See TDS for curing conditions.
Storage
Store at 5 to 25 °C. 1K heat-cure epoxies have limited storage stability — reactivity decreases with higher storage temperature. Observe the expiration date.

Which Permabond 1K epoxy for which application?

Permabond ES5691 in direct comparison with related products of the ES series.

Permabond ES5691
Current Product		Permabond ES569 →Permabond ES550 →Permabond ES566 →
Application1K epoxy with IR/hot air curingWith ovenWith ovenWith oven
ChemistryOne-component epoxy resin (heat-cure with IR/hot light)1K epoxy1K epoxy1K epoxy
CuringHeat curing with infrared lamp or hot airHeat-cureHeat-cureHeat-cure
Topics & Application Fields
Key terms related to this product. Also useful for our search and filters.
Metal ceramic ferrites

Technical data for PERMABOND ES5691

All 20 product information 4 Curing speed (oven) 3 Performance at final strength 1 Physical properties 5 Curing values ​​1 Mechanical properties 1 Shear strength ISO 4587 in N/mm² 3 Thermal properties 2
Product Information
Manufacturer Permabond Engineering Adhesives Ltd
Brand Permabond
Container 320 ml, 1 kg
Country of origin Italy
Cure speed (oven)
130° C 90 minutes
150°C 70 minutes
160°C 15 minutes
Performance at Full Cure
Thermal conductivity 0.3 W/(mK)
Physical Properties
Color white
Chemical group Epoxy resin
Viscosity (adhesives) High viscosity >5000 mPas
Viscosity 2rpm 500000-1000000
Viscosity at 20 rpm 100000-300000
Curing values
Maximum gap fill (mm) 5
Mechanical properties
Hardness (Shore D) >75
Shear strength ISO 4587 in N/mm²
Steel 27-41
Aluminum 17-31
Zinc 14-27
Thermal Properties
Operating temperature (°C) -40 to +180
Storage Temperature (°C) 8-10

Please refer to the technical data sheet (TDS) in the "Documents" tab for binding values.

Documents and data sheets

Click on a document for the preview or the download icon for direct download.

Technical Data Sheets (TDS) 4
Permabond ES5691 - Technical Data Sheet DE.pdf
381 KB
Permabond ES5691 - Technical Data Sheet DE.pdf
381 KB
Permabond ES5691 - Technical Data Sheet EN.pdf
522 KB
Permabond ES5691 - Technical Data Sheet EN.pdf
372 KB
Safety Data Sheets (SDS) 3
Permabond ES5691 - Safety Data Sheet DE.pdf
375 KB
Permabond ES5691 - Safety Data Sheet EN.pdf
371 KB
Permabond ES5691 - Fiche de Sécurité FR.pdf
391 KB

Frequently asked questions about Permabond ES5691

Practical application and design questions — answered by SILITECH.

One-component epoxy with IR or hot air curing — flexible heat cure without an oven. One-component epoxies are processed directly without mixing and cured in a single heat-cure step.

1K epoxies are processed directly from the container without mixing — no pot life limitation, no mixing errors. Disadvantage: heat curing required (industrial oven, IR lamp, or hot air). 2K epoxies cure at room temperature but require precise mixing and have a limited pot life. 1K is suitable for line production with heat-cure infrastructure, 2K for workshops without an oven.

Heat curing with an infrared lamp or hot air. For exact conditions, see Permabond-TDS — typically 30 minutes at 150 °C or equivalent heat input (e.g., 60 min @ 120 °C).

1K heat-cure epoxies bond metals (steel, aluminum, copper), composites (CFK, GFK), ceramics, and selected plastics (with heat resistance). Substrates must tolerate the curing temperature (typically 150 °C).

Permabond ES5691 does not have specific industry approvals such as UL94-V0 (see ES578 for the flame-retardant variant). For general industrial applications, the product is approved according to Permabond standards.

At 5 to 25 °C. 1K heat-cure epoxies have limited storage stability — reactivity decreases with higher storage temperature. For long shelf life, store refrigerated. Allow adhesive to warm to room temperature before opening.

From the Permabond 1K epoxy range: Permabond ES5691 (1K epoxy with IR/hot air curing); Permabond ES569 (high temperature 1K); Permabond ES550 (standard 1K); Permabond ES566 (high temperature). For UL94-V0 fire protection, see ES578; for high temperature, see ES566/ES569; for IR/hot air curing (without an industrial oven), see ES5691.

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Product Specifications

Product Information
Container 320 ml or 1 kg
Manufacturer Permabond Engineering Adhesives Ltd
Brand Permabond
Country of origin Italy
Cure speed (oven)
130° C 90 minutes
150°C 70 minutes
160°C 15 minutes
Performance at Full Cure
Thermal conductivity 0.3 W/(mK)
Physical Properties
Color white
Chemical group Epoxy resin
Viscosity (adhesives) High viscosity >5000 mPas
Viscosity 2rpm 500000-1000000
Viscosity at 20 rpm 100000-300000
Curing values
Maximum gap fill (mm) 5
Mechanical properties
Hardness (Shore D) >75
Shear strength ISO 4587 in N/mm²
Steel 27-41
Aluminum 17-31
Zinc 14-27
Thermal Properties
Operating temperature (°C) -40 to +180
Storage Temperature (°C) 8-10
Keywords
Keywords
Metal ceramic ferrites

Documents and data sheets

Safety Data Sheets (SDS) and Technical Data Sheets (TDS) for download: