PERMABOND ES550
Harmonization Code : 3506.91.90.99 | Prepared glues and other prepared adhesives, not elsewhere specified or included; products suitable for use as glues or adhesives, put up for retail sale as glues or adhesives, not exceeding a net weight of 1 kg ; Adhesives based on polymers of headings 3901 to 3913 or on rubber; Other ; Other

Main features
- Toughened Structural Bonding
- High-Viscosity Placement Control
- No-Mix Bonding Processing
Product Description
Permabond® ES550 is a single-part, heat-curing epoxy paste designed for applications requiring high-performance structural bonds. Formulated to be slump-resistant, it will not flow during the heat-curing process, ensuring precise application. This toughened epoxy delivers exceptional shear, peel, and impact strength, making it highly effective for bonding a wide range of materials, including metals, ferrites, ceramics, and composites.
Key features
- Toughened for high strength: Delivers outstanding impact resistance, alongside excellent shear and peel strength.
- Slump-resistant paste: The extremely high viscosity (1,000,000 to 2,000,000 cP) paste formulation ensures the adhesive will not flow during the elevated temperatures required for curing.
- Single-part convenience: Requires no mixing and cures rapidly with heat, eliminating the risk of mixing errors and improving production efficiency.
Applications / Suitable for
- Bonding metals, ferrites, ceramics, and composites
- Applications requiring a non-sagging adhesive during heat cure
- Structural assemblies subject to high impact and vibration
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Physical Properties
Mechanical Properties
Thermal Properties
Other Properties
Additional Information
As-supplied / before-processing properties
Typical properties; these values are not intended for use in preparing specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Chemical Composition | Epoxy Resin | - | - |
| Appearance | Silver-grey | - | Paste |
| Viscosity | 1,000,000 to 2,000,000 | cP | at 25°C (Helipath, 2rpm) (mPa.s) |
| Specific Gravity | 1.5 | - | - |
| Maximum Gap Fill | 5 | mm | (0.2 in) |
| Flash Point | > 100 | °C | (212°F) |
After-processing / final-state properties
Typical properties; these values are not intended for use in preparing specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Cure Speed | < 3 | minutes | Induction |
| Cure Speed | 75 | minutes | Oven at 130°C (266°F) |
| Cure Speed | 60 | minutes | Oven at 150°C (300°F) |
| Cure Speed | 40 | minutes | Oven at 170°C (338°F) |
| Shear Strength | 27-41 | N/mm² | Steel (ISO 4587) (4000-6000 psi) |
| Shear Strength | > 14 | N/mm² | Steel to ferrite (>2000 psi) Substrate failure |
| Impact Strength | 25-35 | KJ/m² | ASTM D-950 |
| Hardness | 80-85 | Shore D | ISO 868 |
| E-modulus | 4.8 | GPa | - |
| Elongation at Break | < 3 | % | DIN 53504 |
| Coefficient of Thermal Expansion | 45E-6 | mm/m/°C | (below Tg) |
| Coefficient of Thermal Expansion | 160E-6 | mm/m/°C | (above Tg) |
| Thermal Conductivity | 0.55 | W/(m.K) | - |
| Glass Transition Temperature (Tg) | 120 | °C | (250°F) DSC |





















