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PERMABOND ET540

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Permabond ET540 — Epoxy structural adhesive, Shore D 60-75.

High-strength 2K epoxy 2:1 with a very long pot life (120–150 min) for mass production.

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  • Color (A)
  • Viscosity 20rpm (A)
  • Viscosity 2rpm (A)
  • Specific gravity (A)
  • Chemical group (B)
  • Color (B)
  • Viscosity 20rpm (B)
  • Viscosity 2rpm (B)
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  • Country of origin
  • Operating temperature (°C)
  • Mixing ratio
  • Hardness (Shore D)
  • Storage temperature (°C)
  • Maximum gap width (mm)
  • Drip time at 23°C
  • Handling strength at 23°C
  • Functional strength
  • Final strength at 23°C
  • UFI Part A
  • UFI Part B
  • TG value
  • Dielectric strength
  • Steel
  • Elongation at break (elasticity) (ISO37)
  • Thermal conductivity

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Metal, ceramic, wood, composite materials

 
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: 49-540.KT.G400

HS code: 3506.9190000

Internal reference: 49-540.KT.G400
HS code: 3506.9190000

PERMABOND ET540
PERMABOND ET540
Permabond · Permabond Engineering Adhesives Ltd · SKU 49-540.KT.G400

Permabond ET540 is a high-strength 2K epoxy in a 2:1 volume ratio with an exceptionally long pot life — designed for high-volume production and complex plant assembly.

The 2:1 mixing ratio offers different processing characteristics than 1:1—often the smaller component is used as the hardener. The long pot life of 120–150 minutes allows for large processing cycles without the adhesive gelling prematurely.

APPLICATION PROFILE

High-strength 2K epoxy with an unusually long pot life of 120–150 minutes and a 2:1 mixing ratio — developed for large-scale production and plant assembly with long processing cycles.

Permabond ET540 in figures
2:1
mixture
120–150 min
Potting time
22–26
N/mm² steel
Large
Long processing time

What distinguishes Permabond ET540

Very long pot life
120–150 min — suitable for mass production.
2:1 mixing ratio
Standard dual cartridge format.
High Feast
22–26 N/mm² steel shear strength.
Amber-colored curing
Subtle design.
Full curing at room temperature
No heat curing.
Solvent-free
100% reactive.

What is Permabond ET540 used for?

Mass production
Long pot life for line production.
Plant construction
Large structural bonding.
Tractors and wagons
Composite structural bonding with long pot life.
shipbuilding
GRP/CFRP structures.
Mechanical and apparatus engineering
When a 2:1 ratio is preferred.

processing

1
Clean surfaces
Bonding surfaces must be clean, dry, and free of grease. Degrease with Permabond Cleaner A or a solvent (acetone, isopropanol). Lightly sand aluminum and copper to remove oxide layers.
2
Mix components A + B
For dual cartridges: Attach the mixing nozzle and press evenly (2:1 volume mixing ratio). For larger containers: Weigh out the resin and hardener in the correct ratio and mix thoroughly until no streaks are visible. Avoid air bubbles.
3
Apply adhesive + join components
Apply the mixed adhesive to a bonding surface within the pot life (120–150 minutes @ 23 °C). Join the components with sufficient pressure to ensure the adhesive is distributed over the entire bonding surface.
4
Fix components in place during curing
Use a clamping device or vise to prevent the components from moving during curing. Wait for handling strength and functional strength to be determined according to the TDS (Technical Data Sheet).
5
Full curing at room temperature
Final strength is typically reached after 24 hours at 23 °C. Increasing the temperature by 8 °C halves the curing time; lower temperatures slow down the process. If required, optional post-curing at 60–80 °C for maximum strength.
Data sheets & safety data sheet
Full TDS and SDS in DE, EN, FR — view or download directly.
To the documents →

Recommended accessories

Mixing nozzle MFQ 10-24 T (200/400 ml)
Static mixing nozzle for 200 ml and 400 ml twin cartridges (1:1 / 2:1) — nozzle recommended by Permabond for this product.
View product →
Permabond Cleaner A Aerosol
Spray cleaner for quickly degreasing the bonding surfaces before applying the 2K epoxy.
View product →
Permabond ET515 — aerospace star
Highly flexible 1:1 epoxy for aircraft seat trays and composite structural bonding — Permabond recommended for aerospace.
View product →
Permabond ET5162 — Food
EU 10/2011 + FDA compliant for direct food contact — the premium choice for food processing.
View product →
Permabond ET5441 — Thermally conductive
UL94-V0 + 1.0–1.4 W/(m·K) thermal conductivity — for heat sinks, batteries and power electronics.
View product →

Important instructions

Important instructions
Pot life depends on the mixing quantity — exothermic. Degrease surfaces before bonding.
storage
Store at 5 to 25 °C. Keep 2K epoxy components in closed packaging — protect the hardener especially from moisture.

Which Permabond 2K epoxy is suitable for which application?

Permabond ET540 in direct comparison with related products of the ET series.

Permabond ET540
Current product		Permabond ET5401 →Permabond ET5411 →Permabond ET538 →
Application / PropertyHigh-strength 2-component epoxy 2:1 — very long pot life for large-scale productionVery short potting timeHeat resistant1:1 mixture
Mixing ratio2:1 volume parts2:12:11:1
Potting time120–150 minutes @ 23 °C10–12 min—120–150 min
Steel shear strength22–26 N/mm²20–30 N/mm²—25–30 N/mm²
carbon fiber—22–24 N/mm²—20–24 N/mm²
Topics & Application Areas
Key terms related to this product. Also useful for our search and filters.
Metal, ceramic, wood, composite materials

Technical data for PERMABOND ET540

All 30 product information 5 Physical properties A 6 Physical properties B 6 Performance at final strength 3 Bonding properties 2 Curing values ​​3 Mechanical properties 1 Shear strength ISO 4587 in N/mm² 1 Thermal properties 2 General 1
Product information
Manufacturer Permabond Engineering Adhesives Ltd
brand Permabond
Container 400 ml
Country of origin Italy
Mixing ratio 2:1
Physical properties A
Chemical group (A) epoxy resin
Color (A) White
Viscosity 20rpm (A) 50000-100000
Viscosity 2rpm (A) 150000-300000
Specific gravity (A) 1.1
UFI Part A APF0-G0GT-4001-SATY
Physical properties B
Chemical group (B) Polyamine hardener
Color (B) amber yellow
Viscosity 20rpm (B) 150000
Viscosity 2rpm (B) 500000
Specific gravity (B) 1.0
UFI Part B RQ41-G0M2-5008-UYKS
Performance at final strength
Dielectric strength 15-25 kV/mm
Elongation at break (elasticity) (ISO37) 4-8%
Thermal conductivity 0.55 W/(mK)
Properties of the adhesive
Functional strength 24 hours
Final strength at 23°C 72 hours
Curing values
Maximum gap width (mm) 5
Drip time at 23°C 120-150 minutes
Handling strength at 23°C 150-180 minutes
Mechanical properties
Hardness (Shore D) 60-75
Shear strength ISO 4587 in N/mm²
Steel 14-18 N/mm²
Thermal properties
Operating temperature (°C) -40 to +120
Storage temperature (°C) 5-25
Generally
TG value +45-55°C

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) 6
Permabond ET540 - Technical Data Sheet DE.pdf
479 KB
Permabond ET540 - Technical Data Sheet DE.pdf
325 KB
Permabond ET540 - Technical Data Sheet EN.pdf
322 KB
Permabond ET540 - Technical Data Sheet EN.pdf
475 KB
Permabond ET540 - Fiche Technique FR.pdf
456 KB
Permabond ET540 - Fiche Technique FR.pdf
291 KB
Safety Data Sheets (SDS) 3
Permabond ET540 - Safety Data Sheet DE.pdf
416 KB
Permabond ET540 - Safety Data Sheet EN.pdf
394 KB
Permabond ET540 - Fiche de Sécurité FR.pdf
398 KB

Frequently asked questions about Permabond ET540

Practical application and design questions — answered by SILITECH.

High-strength 2-component epoxy 2:1 — very long pot life (120–150 min) for high-volume production. The 2-component epoxy is mixed in a 2:1 volume ratio and offers a pot life of 120–150 minutes @ 23 °C.

Mix both components in a 2:1 ratio by volume — using a mixing nozzle for dual cartridges, weigh precisely for larger containers. Apply within the pot life (120–150 minutes @ 23 °C) and join components. Full curing typically occurs after — at room temperature.

The pot life of Permabond ET540 is typically 120–150 minutes at 23 °C. Higher temperatures shorten, lower temperatures lengthen the pot life. Mixing quantities above approximately 100 g may gel more quickly due to an exothermic reaction.

Permabond ET540 bonds reliably to: steel: 22–26 N/mm². For thermoplastic substrates, test compatibility before series production.

Permabond ET540 does not have specific industry-specific approvals such as EU 10/2011 (food), UL94 (fire protection), or Boeing/Airbus (aerospace). For general industrial applications, the product is approved according to Permabond standards.

Permabond ET540 is a high-strength, two-component epoxy (2:1 ratio) with a very long pot life for large production runs (2:1 volume mix, 120–150 minutes pot life @ 23 °C). Permabond ET5401 is a fast-setting 2:1 (2:1, 10–12 min pot life) with a very short pot life.

From the Permabond 2K epoxy range, select according to application, mixing ratio, and strength requirements: Permabond ET540 (High-strength 2K epoxy 2:1 — very long pot life for large-scale production); Permabond ET5401 (Fast-curing 2:1); Permabond ET5411 (High-temperature 2:1); Permabond ET538 (Long pot life 1:1). For aerospace applications, see ET515 (Aircraft Seat Trays); for food applications, see ET5162 (EU 10/2011 + FDA); for thermal conductivity/fire protection, see ET5441 (UL94-V0).

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Product specifications

Product information
Manufacturer Permabond Engineering Adhesives Ltd
brand Permabond
Container 400 ml
Country of origin Italy
Mixing ratio 2:1
Physical properties A
Chemical group (A) epoxy resin
Color (A) White
Viscosity 20rpm (A) 50000-100000
Viscosity 2rpm (A) 150000-300000
Specific gravity (A) 1.1
UFI Part A APF0-G0GT-4001-SATY
Physical properties B
Chemical group (B) Polyamine hardener
Color (B) amber yellow
Viscosity 20rpm (B) 150000
Viscosity 2rpm (B) 500000
Specific gravity (B) 1.0
UFI Part B RQ41-G0M2-5008-UYKS
Performance at final strength
Dielectric strength 15-25 kV/mm
Elongation at break (elasticity) (ISO37) 4-8%
Thermal conductivity 0.55 W/(mK)
Properties of the adhesive
Functional strength 24 hours
Final strength at 23°C 72 hours
Curing values
Maximum gap width (mm) 5
Drip time at 23°C 120-150 minutes
Handling strength at 23°C 150-180 minutes
Mechanical properties
Hardness (Shore D) 60-75
Shear strength ISO 4587 in N/mm²
Steel 14-18 N/mm²
Thermal properties
Operating temperature (°C) -40 to +120
Storage temperature (°C) 5-25
Uncategorized
TG value +45-55°C
Keywords
Keywords
Metal, ceramic, wood, composite materials

Documents and datasheets

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