PERMABOND ES5681
Special 1K epoxy (engineering) — on request
Special 1K epoxy ES5681 — Engineering applications with SILITECH consulting.
Internal reference:
49-5681.KT.G320
HS code:
35.069.190.000
Permabond ES5681 is a special 1K epoxy with an engineering profile.
Engineering 1K epoxy with specific properties.
Special 1K epoxy for engineering applications — technical data available via SILITECH distribution.
What distinguishes Permabond ES5681
What is Permabond ES5681 used for?
processing
Recommended accessories
Important instructions
Which Permabond 1K epoxy is suitable for which application?
Permabond ES5681 in direct comparison with related products of the ES series.
Permabond ES5681 Current product | Permabond ES568 → | Permabond ES560 → | Permabond ES578 → | |
|---|---|---|---|---|
| Application | Special 1K epoxy (engineering) | Comparable | Comparable | Flame retardant |
| Chemistry | One-component epoxy resin | 1K epoxy | 1K epoxy | 1K epoxy |
| Curing | Heat Cure | Heat Cure | Heat Cure | Heat Cure |
Technical data for PERMABOND ES5681
| Product information | |
|---|---|
| brand | Permabond |
| Manufacturer | Permabond Engineering Adhesives Ltd |
| Container | 320 ml |
| Country of origin | Italy |
| Curing speed (oven) | |
|---|---|
| 135°C | 35 minutes |
| 150°C | 20 minutes |
| 160°C | 15 minutes |
| Performance at final strength | |
|---|---|
| Tensile strength (ASTM D-2095-69) | 35-40 N/mm² |
| Impact resistance (astm D-950) | 30-40 kJ/m² |
| Peel resistance (aluminum) (ISO 4578) | 180-200 N/25mm |
| Physical properties | |
|---|---|
| Chemical group | epoxy resin |
| Color | black |
| Viscosity (adhesives) | 40000-60000 |
| Specific gravity | 1.1 |
| Curing values | |
|---|---|
| Maximum gap width (mm) | 0.5 |
| Mechanical properties | |
|---|---|
| Hardness (Shore D) | 84 |
| Shear strength ISO 4587 in N/mm² | |
|---|---|
| Steel | 30 - 35 N/mm² |
| Glass/Polyester | 3-5 N/mm² |
| Glass/epoxy | 14-16 N/mm² |
| carbon fiber | 18-22 N/mm² |
| Thermal properties | |
|---|---|
| Storage temperature (°C) | 2-7 |
| Generally | |
|---|---|
| Curing speed (induction) | < 2 minutes |
For binding values, please refer to the technical data sheet (TDS) in the "Documents" tab.
Frequently asked questions about Permabond ES5681
Practical application and design questions — answered by SILITECH.
Special 1K epoxy for engineering applications. 1K 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. 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 ES5681 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 ES5681 (Special 1K epoxy (Engineering)); Permabond ES568 (Engineering); Permabond ES560 (Engineering); Permabond ES578 (UL94-V0). 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 | |
|---|---|
| brand | Permabond |
| Manufacturer | Permabond Engineering Adhesives Ltd |
| Container | 320 ml |
| Country of origin | Italy |
| Curing speed (oven) | |
|---|---|
| 135°C | 35 minutes |
| 150°C | 20 minutes |
| 160°C | 15 minutes |
| Performance at final strength | |
|---|---|
| Tensile strength (ASTM D-2095-69) | 35-40 N/mm² |
| Impact resistance (astm D-950) | 30-40 kJ/m² |
| Peel resistance (aluminum) (ISO 4578) | 180-200 N/25mm |
| Physical properties | |
|---|---|
| Chemical group | epoxy resin |
| Color | black |
| Viscosity (adhesives) | 40000-60000 |
| Specific gravity | 1.1 |
| Curing values | |
|---|---|
| Maximum gap width (mm) | 0.5 |
| Mechanical properties | |
|---|---|
| Hardness (Shore D) | 84 |
| Shear strength ISO 4587 in N/mm² | |
|---|---|
| Steel | 30 - 35 N/mm² |
| Glass/Polyester | 3-5 N/mm² |
| Glass/epoxy | 14-16 N/mm² |
| carbon fiber | 18-22 N/mm² |
| Thermal properties | |
|---|---|
| Storage temperature (°C) | 2-7 |
| Uncategorized | |
|---|---|
| Curing speed (induction) | < 2 minutes |
| Keywords | |
|---|---|
| Keywords | |
Documents and datasheets
Safety Data Sheets (SDS) and Technical Data Sheets (TDS) are available for download: