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PERMABOND ES5691

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

1K epoxy with IR/hot air curing — flexible without an industrial oven, ideal for workshops.

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  • Viscosity (adhesives)
  • Viscosity 2rpm
  • Viscosity 20rpm
  • Operating temperature (°C)
  • Hardness (Shore D)
  • Storage temperature (°C)
  • Maximum gap width (mm)
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  • 130°C
  • 150°C
  • 160°C
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General Terms and Conditions.

Shipping usually within 1 to 3 business days
(availability will be confirmed after ordering)

. Express logistics. Fast and reliable within Switzerland & Europe.

Shipping from Swiss warehouse within 24 hours. Batch certificate. Invoice within 30 days (B2B). Technical support.
Shipping & Delivery

Usually 1 to 3 working days

Availability will be confirmed after order receipt.

Express logistics within Switzerland & Europe.

General Terms and Conditions →

Product data

Internal reference: 49-5691

HS code: 3506.9190000

Internal reference: 49-5691
HS code: 3506.9190000

PERMABOND ES5691
PERMABOND ES5691
Permabond · Permabond Engineering Adhesives Ltd · SKU 49-5691

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 potting season
Direct
Mobile
Without an oven

What distinguishes Permabond ES5691

IR/hot air curing
Without an industrial oven — lamp or blower.
1K system
Do not mix.
Mobile use
Workshops, service, on-site repair.
No potting season
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 to be clean, dry, and free of grease — degrease with Permabond Cleaner A. Lightly sand aluminum and copper to remove oxide layers.
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
Add and fix components
Assemble the components with sufficient pressure. Use a clamping device or vise 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 – final strength is reached immediately after cooling. Unlike with 2-component epoxies at room temperature, there is no 24-hour waiting time.
Data sheets & safety data sheet
Full TDS and SDS in DE, EN, FR — view or download directly.
To the documents →

Recommended accessories

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

Important instructions

Important instructions
IR lamp or hot air blower required. See TDS for curing conditions.
storage
Store between 5 and 25 °C. 1K heat-cure epoxides have limited storage stability—reactivity decreases with increasing storage temperature. Observe the expiration date.

Which Permabond 1K epoxy is suitable 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 Areas
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
Curing speed (oven)
130°C 90 minutes
150°C 70 minutes
160°C 15 minutes
Performance at final strength
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 20rpm 100000-300000
Curing values
Maximum gap width (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

For binding values, please refer to the technical data sheet (TDS) in the "Documents" tab.

Documents and datasheets

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

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

One-component heat-cure epoxies bond metals (steel, aluminum, copper), composites (CFRP, GFRP), ceramics, and selected heat-resistant plastics. 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.

Store between 5 and 25 °C. 1K heat-cure epoxies have limited storage stability—reactivity decreases with increasing storage temperature. For long shelf life, store refrigerated. Allow the 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
Curing speed (oven)
130°C 90 minutes
150°C 70 minutes
160°C 15 minutes
Performance at final strength
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 20rpm 100000-300000
Curing values
Maximum gap width (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 datasheets

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