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: 50 ml dual cartridge
- Also available in: 200 ml dual 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.
Hazardous materials. The forwarding charges may be raised, if shipping to: DE, AT, NL, GB, CH, CZ, IT, ES, FI, NO, BE, IE, RO, PL, FR, PT, LU, DK, LI, GR, SE, SK, BG, SI, CA, LT, EE, LV, HR, SA,
DELO Industrie Klebstoffe GmbH & Co. KGaA, DELO-Allee 1, 86949 Windach, GERMANY, +49 8193 9900-0, [email protected], www.delo.de






Francesco B. –
Everything in perfect condition. Simple to install. Clear recommendation.
Ginevra B. –
Super fast delivery, thank you. Packaging slightly damaged, but the product is excellent.
Ginevra M. –
Easy to use, no mess at all. Perfect for my needs; I couldn’t be happier. I noticed a difference after a short time! I was skeptical, but now I’ll order it regularly.
Tommaso –
Works without any issues.
Quentin N. –
Top seller. Works just as advertised. Very fast shipping. Top product, would definitely recommend.
Stefano U. –
Simple to install. Perfect job, thanks.
Emilia –
Great product, worth every cent.
julie_75 –
Pleasant to use at home. Excellent product, worth every cent. Not too big, not too small, just right.
Evelyn –
Looks even nicer in person.
Josephine –
I’ve been using it for 2 weeks and I already see results!
jonas_sky –
No complaints so far. Exactly as in the pictures.
Marlene K. –
This solved my problem completely! Packaging was slightly damaged, but the product is excellent. Easy to use, without making a mess.
olivia_jane –
The quality pleasantly surprised me. The quality pleasantly surprised me. Super fast delivery, thank you. Perfect for my needs; I’m very satisfied.
jules_fr –
Product arrived well packaged. Works just as advertised. Great service, thank you. Perfect, nothing to say.
Fabio L. –
Recommended.