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3M™ Scotch-Weld™ Epoxy Adhesive DP125 Translucent

Brands: 3M™ Scotch-Weld™

Package Sizes:

  • 48.5 mL Duo-Pak Cartridge
  • 400 mL Duo-Pak Cartridge

Shelf Life: 24 months

Product Description

3M™ Scotch-Weld™ Epoxy Adhesive DP125 Translucent is a two-part, flexible epoxy adhesive with high shear and peel strength. It offers a 25-minute work life and is designed for applications requiring strong and durable bonds with flexibility. This adhesive provides good resistance to impact and environmental conditions.


Key Features

  • 25-minute work life for easy application
  • High peel and shear strength for strong bonding
  • Flexible epoxy with translucent appearance
  • 1:1 mix ratio for simple usage
  • Good resistance to impact and environmental conditions

Recommended Applications

  • Bonding metals, plastics, and composites
  • Structural bonding for flexible joints
  • Applications requiring impact and peel resistance
  • Electronics and industrial assembly

Typical Uncured Physical Properties

Attribute Value
Base Color Clear
Accelerator Color Amber
Base Density 9.3 – 9.7 lb/gal
Accelerator Density 8.4 – 8.6 lb/gal
Mix Ratio by Volume (B:A) 1:1
Mix Ratio by Weight (B:A) 1.10:1
Base Viscosity (27°C / 80°F) 2,000 – 8,000 cP
Accelerator Viscosity (27°C / 80°F) 22,000 – 33,000 cP

Typical Mixed Physical Properties

Attribute Temperature Value
Work Life 23°C (73°F) 25 min
Time to Handling Strength 23°C (73°F) 2.5 h
Full Cure Time 23°C (73°F) 7 days

Typical Cured Characteristics

Attribute Test Method Value
Cured Color Translucent
Shore D Hardness ASTM D2240 55
Elongation ASTM D882 150%
Tensile Strength ASTM D882 2,500 psi

Typical Performance Characteristics

Overlap Shear Strength (OLS)

Test Method: ASTM D1002

Substrate Surface Prep Value (psi)
Etched Aluminum 2,500
Sanded Aluminum (60 grit) 1,400
Cold Rolled Steel 1,500
Wood, Fir 700
Glass, Borosilicate 250
Glass + 3M™ Scotch-Weld™ Primer 3901 200
Polycarbonate 700
Acrylic 420
Fiberglass 1,200
ABS 460
PVC 500
Polypropylene 25

Rate of Strength Buildup (OLS on Etched Aluminum)

Test Method: ASTM D1002

Time at Room Temperature Value (psi)
3 hours 100
6 hours 300
1 day 1,300
1 week 1,900
1 month 2,050

Environmental Aging (OLS on Etched Aluminum)

Test Method: ASTM D1002

Condition Duration Value (psi)
24 hrs RT + 2 hrs @ 160°F 2,300
24 hrs RT + 2 hrs @ 240°F 3,300
1 week RT + 1 week @ 90°F/90% RH 2,600
1 week RT + 1 week @ 248°F 4,600
1 week RT + 1 week H₂O Immersion 2,100

Overlap Shear Strength vs. Temperature (OLS on Etched Aluminum)

Test Method: ASTM D1002

Temperature Value (psi)
-67°F 4,000
70°F 2,500
120°F 400
150°F 190
180°F 150

180° Peel Strength vs. Temperature

Test Method: ASTM D1876

Temperature Value (piw)
-67°F 3
70°F 35
120°F 10
150°F 3
180°F 2

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