Description
DELO-DUOPOX® AD840 is a thixotropic, room-temperature curing 2-component epoxy adhesive for industrial bonding in mechanical engineering, electronics and the automotive industry.
- Pack size: 200 ml double cartridge
- Also available in: 50 ml double cartridge
Applications
- Bonding of metals, plastics, glass, ceramics, and composites
- Electronics manufacturing, mechanical engineering, automotive
- Adhesive joints under thermal and chemical stress
- Operating temperature range: -40 °C to +150 °C
Features
- Three-phase curing at room temperature (initial, functional, final strength)
- Long pot life: approx. 90 minutes (100 g / 23 °C)
- Excellent resistance to chemicals and mechanical loads
- Biocompatibility tested (DIN EN ISO 10993-5)
- RoHS compliant (Directive 2015/863/EU)
- VOC compliant (GB33372-2020)
- Flame retardant per UL 94 HB
- Suitable for Delo-Automix systems
Technical Data
| Physical Properties | |
|---|---|
| Color (cured) | Gray |
| Transparency | Opaque |
| Mix ratio (vol / wt) | 1:1 / 0.88:1 |
| Density Part A / B | 1.18 / 1.33 g/cm³ |
| Viscosity Part A / B | 110,000 / 125,000 mPa·s |
| Pot life (100 g, RT) | 90 min |
| Shrinkage | 3 vol.% |
| Water absorption (24 h) | 0.18 wt.% |
| Mechanical Properties | |
| Lap shear strength (Al/Al, 23 °C) | 22 MPa |
| Lap shear strength (steel/steel) | 22 MPa |
| Tensile strength | 30 MPa |
| Elongation at break | 6 % |
| Shore hardness D | 76 |
| Modulus of elasticity | 1700 MPa |
| Peel resistance (steel) | 6 N/mm |
| Compressive shear strength (Al/Al) | 26 MPa |
| Compressive shear strength (stainless steel) | 30 MPa |
| Compressive shear strength (PA6 / PC-ABS) | 17 MPa / 13 MPa |
| Thermal Properties | |
| Service temperature range | -40 °C to +150 °C |
| Glass transition temperature (Tg) | 69 °C |
| Decomposition temperature | 280 °C |
| CTE (30-150 °C) | 160 ppm/K |
| Electrical Properties | |
| Dielectric strength | 25 kV/mm |
| Surface resistivity | >1E14 Ohm |
| Volume resistivity | >1E14 Ohm·cm |
| Tracking resistance (CTI) | 600 |
Instructions for Use
- Dispense from dual cartridge using static mixer
- Clean and pre-treat surfaces before bonding
- Use within pot life (90 min)
- Curing can be accelerated by heat
Recommended Accessories
- Mixing nozzle: 050 short
- Dispensing gun: DELO-XPress
- Cleaner: Delothen NK1 400ml
Storage & Shelf Life
- Shelf life: 12 months at +18 °C to +25 °C (unopened)
- Store dry, frost-free, in original packaging
DELO-DUOPOX AD840, epoxy adhesive, 2K glue, high strength, electronics bonding
Hazard Identification (CLP) – Component A


Signal word: Warning.
Hazard Statements (H-Sentences)
- Causes skin irritation.
- May cause allergic skin reactions.
- Causes serious eye irritation.
- Toxic to aquatic organisms, with long-lasting effects.
Precautionary Statements (P-Sentences)
Prevention:
- Wear protective gloves (1-4 hours breakthrough time: recommended Viton® fluoroelastomer / short-term exposure < 15 min nitrile gloves).
- Wear eye protection or face protection.
- Avoid release to the environment.
- Avoid inhaling vapors.
- Wash thoroughly after use.
Response:
- If inhaled: Seek medical advice if feeling unwell, call a Poison Center or a doctor.
- Remove contaminated clothing and wash before reuse.
- If on skin: Wash with plenty of water and seek medical advice if irritation occurs.
- If in eyes: Rinse carefully with water for several minutes. Remove contact lenses if possible. Continue rinsing and immediately seek medical advice if irritation persists.
Storage and Disposal
- Not applicable.
- Dispose of contents and container in accordance with local, regional, national, and international regulations.
Hazard Identification (CLP) – Component B


Signal word: Danger.
Hazard Statements (H-Sentences)
- Causes severe skin burns and eye damage.
- May cause allergic skin reactions.
- Toxic to aquatic organisms, with long-lasting effects.
Precautionary Statements (P-Sentences)
Prevention:
- Wear protective gloves (1-4 hours breakthrough time: recommended Viton® fluoroelastomer / short-term exposure < 15 min nitrile gloves).
- Wear protective clothing, eye protection, or face protection.
- Avoid release to the environment.
- Avoid inhaling vapors.
Response:
- If inhaled: Immediately call the Poison Center or a doctor.
- If swallowed: Immediately call the Poison Center or a doctor, rinse mouth, DO NOT induce vomiting.
- If on skin (or hair): Remove all contaminated clothing immediately, wash skin with water, immediately call the Poison Center or a doctor.
- If on skin: Wash with plenty of water, seek medical advice if irritation or rash occurs.
- If in eyes: Rinse carefully with water for several minutes, remove contact lenses if possible, continue rinsing and immediately call the Poison Center or a doctor.
Storage and Disposal
- Not applicable.
- Dispose of contents and container in accordance with local, regional, national, and international regulations.
DELO Industrie Klebstoffe GmbH & Co. KGaA, DELO-Allee 1, 86949 Windach, GERMANY, +49 8193 9900-0, [email protected], www.delo.de






Pietro –
Very happy with the purchase, works great.
Zoe –
Better than anything else I’ve tried before. Perfect for my needs; I’m very satisfied. Excellent product, worth every cent. Very fast delivery, thank you.
gabriele_it –
Excellent packaging. Excellent service.
elise_fr –
Feels nice to use at home. No unpleasant smell; I really like that. It completely solved my problem!
simone88 –
Top product, top price. Product arrived well packaged. Robust and well-made. No reason to complain.
louis75 –
Very happy with the purchase, works great. Feels durable and well built. Perfectly packaged. Excellent quality.
james_88 –
Solid build quality. Good quality at a fair price.
Sophia –
Pleasant to use at home. This solved my problem completely!
paul_fr –
Everything OK. Perfect match with the description. Very fast shipping.
cecilia_s –
Packaging was slightly damaged, but the product is excellent. Super fast delivery, thank you.
Hannah –
The quality surprised me in a good way. Feels nice to use at home. A friend recommended it; I’m very happy with the purchase. No unpleasant smell; I really like that.
luke_star –
Perfect match with the description.
ines_belle –
Great product, worth every cent. Perfect for my needs, couldn’t be happier. Not too big, not too small, just right.
Antonio Y. –
Very stable. Very functional. Better quality than I expected. Works great.
Sophie –
Looks even nicer in real life.