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PERMABOND ET515

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Permabond ET515 — Epoxy structural adhesive, Shore D 30-50.

Aerospace-Star — Permabond-recommended epoxy for aircraft seat trays, highly flexible with 100–150 N/25 mm peel resistance.

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  • Color (A)
  • Viscosity 20rpm (A)
  • Specific gravity (A)
  • Chemical group (B)
  • Color (B)
  • Viscosity 20rpm (B)
  • Specific gravity (B)
  • Country of origin
  • Operating temperature (°C)
  • Mixing ratio
  • Color
  • Viscosity (adhesives)
  • Hardness (Shore D)
  • Storage temperature (°C)
  • Maximum gap width (mm)
  • Drip time at 23°C
  • Functional strength
  • UFI Part A
  • UFI Part B
  • TG value
  • Dielectric strength
  • Steel
  • Glass/Polyester
  • Glass/epoxy
  • carbon fiber
  • Peel resistance (aluminum) (ISO 4578)
  • Elongation at break (elasticity) (ISO37)
  • TG value
  • Dielectric strength
  • Thermal conductivity

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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: 49-515.KT.G050

HS code: 3506.9190000

Internal reference: 49-515.KT.G050
HS code: 3506.9190000

PERMABOND ET515
PERMABOND ET515
Permabond Permabond Engineering Adhesives Ltd SKU 49-515.KT.G050

Permabond ET515 is a highly flexible 2K epoxy specifically for bonding different materials (composite, metal, plastic) — with exceptional flexibility, high peel resistance and aerospace suitability for aircraft seat trays.

With an elongation at break of 20–40% and a temperature difference (Tg) of +20 °C, ET515 is significantly more flexible than standard epoxies—this flexibility buffers thermal expansion and contraction between dissimilar materials (such as carbon fiber to aluminum). Its peel strength of 100–150 N/25 mm is a top value for industrial structures.

The official Permabond recommendation for bonding aircraft seat trays underscores its suitability for aerospace applications. ET515 bonds steel (8–12 N/mm²), aluminum (9–12 N/mm²), carbon fiber (8–12 N/mm²), polyester GRP, epoxy FRP, and polycarbonate (substrate failure). The 2 mm gap filling accommodates large tolerances.

AEROSPACE STAR

Aerospace epoxy for aircraft seat trays — Permabond ET515 is officially recommended by Permabond for bonding aircraft seat tray structures. Its combination of high flexibility (20–40% elongation at break) and peel strength (100–150 N/25 mm) makes it the premium choice for composite structural bonding with differing coefficients of thermal expansion.

Permabond ET515 in figures
100–150
N/25 mm peel resistance
20–40 %
Elongation at break
Aerospace
Aircraft seats
1:1
Mixture 2 mm Gap

What distinguishes Permabond ET515

Aerospace suitability
Aircraft Seat Trays — Permabond-recommended for aircraft interiors.
Highly flexible
20–40% elongation at break — buffers thermal stresses between dissimilar materials.
Highest peel resistance
100–150 N/25 mm — peak value for 2K epoxies.
Multi-substrate
Steel, aluminum, CFRP, GFRP, polycarbonate — all in one application.
2 mm gap filling
Even large tolerances can be covered.
Full curing at room temperature
No heat step — suitable for temperature-sensitive composites.

What is Permabond ET515 used for?

Aircraft Seat Trays
Permabond is recommended for use as an airplane seat cushion.
Composite structural bonding
CFRP and GFRP components in aerospace, sporting goods, and mechanical engineering.
Multi-material bonding
Components with different thermal expansion rates.
Structures subjected to shock and vibration
High peel resistance for dynamic loads.
Model making and prototyping
Composite constructions with weight requirements.

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 (1:1 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 (10–20 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 72 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

SILISIL Adhesive Dispensing Gun 50 ml
Manual dispensing gun for 50 ml twin cartridges with 1:1 and 2:1 mixing ratios — precise dispensing without waste for multi-component adhesives.
View product →
Mixing nozzle MBQ 05-24L (50 ml)
Static mixing nozzle for 50 ml dual cartridges (1:1 / 2:1) — nozzle with Luer-Lock tip 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
Before bonding, degrease surfaces with Permabond Cleaner A. Lightly sand aluminum for maximum adhesion. Test compatibility with thermoplastic substrates. Full curing takes 72 hours at 23 °C — higher temperatures accelerate curing.
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 ET515 in direct comparison with related products of the ET series.

Permabond ET515
Current product		Permabond ET514 →Permabond ET5422 →Permabond ET5441 →
Application / PropertyHighly flexible 2K epoxy 1:1 — Aerospace, Composite, Multi-MaHigher strength, less flexibleMaximum strengthUL94, thermally conductive
Mixing ratio1:1 volume parts1:1100:442:1
Potting time10–20 minutes @ 23 °C30–50 min——
Steel shear strength8–12 N/mm²20–30 N/mm²22–26 N/mm²20–25 N/mm²
carbon fiber8–12 N/mm²—20–30 N/mm² Carbon25–30 N/mm²
Topics & Application Areas
Key terms related to this product. Also useful for our search and filters.
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Technical data for PERMABOND ET515

All 34 product information 5 Physical properties A 5 Physical properties B 5 Performance at final strength 5 Bonding properties 1 Physical properties 2 Curing values ​​2 Mechanical properties 1 Shear strength ISO 4587 in N/mm² 4 Thermal properties 2 General 2
Product information
Manufacturer Permabond Engineering Adhesives Ltd
brand Permabond
Container 50 ml
Country of origin Italy
Mixing ratio 1:1
Physical properties A
Chemical group (A) epoxy resin
Color (A) Colorless
Viscosity 20rpm (A) 10000-20000
Specific gravity (A) 1.1
UFI Part A 0830-50Q0-D006-TXAD
Physical properties B
Chemical group (B) amine hardener
Color (B) Colorless
Viscosity 20rpm (B) 14000-24000
Specific gravity (B) 1.1
UFI Part B XC30-P0DD-P00Q-F8WF
Performance at final strength
Dielectric strength 15-25 kV/mm
Peel resistance (aluminum) (ISO 4578) 70-90 N/25mm
Elongation at break (elasticity) (ISO37) 20-40%
Dielectric strength 15-25 kV/mm
Thermal conductivity 0.3 W/(mK)
Properties of the adhesive
Functional strength 24 hours
Physical properties
Color colorless
Viscosity (adhesives) 12000-22000
Curing values
Maximum gap width (mm) 2
Drip time at 23°C 10-20 minutes
Mechanical properties
Hardness (Shore D) 30-50
Shear strength ISO 4587 in N/mm²
Steel 8 - 12 N/mm²
Glass/Polyester 3-5 N/mm²
Glass/epoxy 4-6 N/mm²
carbon fiber 4-6 N/mm²
Thermal properties
Operating temperature (°C) -55 to +100
Storage temperature (°C) 5-25
Generally
TG value +50-60°C
TG value 20-40%

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) 3
Permabond ET515 - Technical Data Sheet DE.pdf
329 KB
Permabond ET515 - Technical Data Sheet EN.pdf
321 KB
Permabond ET515 - Fiche Technique FR.pdf
294 KB
Safety Data Sheets (SDS) 3
Permabond ET515 - Safety Data Sheet DE.pdf
326 KB
Permabond ET515 - Safety Data Sheet EN.pdf
304 KB
Permabond ET515 - Fiche de Sécurité FR.pdf
325 KB

Frequently asked questions about Permabond ET515

Practical application and design questions — answered by SILITECH.

Highly flexible aerospace epoxy 1:1 — for aircraft seat trays, composite structural bonding, and maximum peel resistance. This 2-component epoxy is mixed in a 1:1 volume ratio and offers a pot life of 10–20 minutes @ 23 °C.

Mix both components in a 1:1 ratio by volume — use the mixing nozzle for dual cartridges, weigh precisely for larger containers. Apply within the pot life (10–20 minutes @ 23 °C) and join components. Full curing typically occurs after 72 hours at room temperature.

The pot life of Permabond ET515 is typically 10–20 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 ET515 reliably bonds: Steel: 8–12 N/mm²; Aluminum: 9–12 N/mm²; Stainless steel: 6–9 N/mm²; Carbon fiber: 8–12 N/mm²; Polyester-GRP: 3–5 N/mm²; Epoxy-GRP: 4–6 N/mm²; Polycarbonate: >5 N/mm² (substrate failure). For thermoplastic substrates, test compatibility before series production.

Permabond ET515 is approved according to: Aerospace Aircraft Seat Tray Bonding (Permabond-confirmed). Compliance letters and detailed certificates are available from Permabond/SILITECH.

Permabond ET515 is a highly flexible 2-component epoxy 1:1 — for aerospace, composite, and multi-material applications (1:1 volume mix, 10–20 minutes pot life @ 23 °C). Permabond ET514 is a high-strength 1:1 epoxy (1:1, 30–50 min pot life) — higher strength, less flexible.

From the Permabond 2K epoxy range, select according to application, mixing ratio, and strength requirements: Permabond ET515 (Highly flexible 2K epoxy 1:1 — Aerospace, Composite, Multi-material); Permabond ET514 (High strength 1:1); Permabond ET5422 (Premium 100:44); Permabond ET5441 (Thermally conductive 2:1). 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 50 ml
Country of origin Italy
Mixing ratio 1:1
Physical properties A
Chemical group (A) epoxy resin
Color (A) Colorless
Viscosity 20rpm (A) 10000-20000
Specific gravity (A) 1.1
UFI Part A 0830-50Q0-D006-TXAD
Physical properties B
Chemical group (B) amine hardener
Color (B) Colorless
Viscosity 20rpm (B) 14000-24000
Specific gravity (B) 1.1
UFI Part B XC30-P0DD-P00Q-F8WF
Performance at final strength
Dielectric strength 15-25 kV/mm, 15-25 kV/mm
Peel resistance (aluminum) (ISO 4578) 70-90 N/25mm
Elongation at break (elasticity) (ISO37) 20-40%
Thermal conductivity 0.3 W/(mK)
Properties of the adhesive
Functional strength 24 hours
Physical properties
Color colorless
Viscosity (adhesives) 12000-22000
Curing values
Maximum gap width (mm) 2
Drip time at 23°C 10-20 minutes
Mechanical properties
Hardness (Shore D) 30-50
Shear strength ISO 4587 in N/mm²
Steel 8 - 12 N/mm²
Glass/Polyester 3-5 N/mm²
Glass/epoxy 4-6 N/mm²
carbon fiber 4-6 N/mm²
Thermal properties
Operating temperature (°C) -55 to +100
Storage temperature (°C) 5-25
Uncategorized
TG value +50-60°C, 20-40%
Keywords
Keywords
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Documents and datasheets

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