The 3M 7100148731 DP420 is a high-strength black two-part epoxy in a 50 mL cartridge. It delivers 4500 psi shear strength for demanding structural bonds. The flowable, self-leveling formula wets substrates for secure adhesion. Worklife is short (approximately 4 to 8 minutes for 20 g at 23°C), enabling fast assemblies. Open time is about 20 minutes at 22°C for typical positioning. Full cure is reached in 24 hours at 72°F (22°C). DP420 black resists heat and meets UL94 HB for basic flame performance. Use it indoors or outdoors on wood, metal, and many rigid plastics. The Cartridge format supports 3M Two-part epoxy gun dispensing for neat application. Choose 3M 7100148731 when a fast, strong black epoxy is required for repairs and bonding.
Very High Shear Strength: 4500 PSI
3M 7100148731 provides robust structural bonds for heavy-load applications using 3M DP420.
Fast Worklife for Quick Assembly
Short 4 to 8 minute work life (20 g at 23°C) lets operators mix and set parts rapidly with 3M scotch weld epoxy adhesive DP420.
Flowable, Self-Leveling Viscosity
DP420’s flowable paste wets irregular surfaces for full contact and reliable bonding.
Cartridge-Format Gun Compatible
A 1.69 fl oz cartridge fits 3M two-part epoxy gun systems for precise, low-waste dispensing.
Black Finish & UL94 HB
DP420 black offers low-visibility joints and basic flame retardance for indoor/outdoor use.
| Manufacturer Part Number | 7100148731 |
| Adhesive Type | Epoxy |
| Worklife | 20 g: 4 min - 8 min @ 73 °F (23 °C) |
| Color Family | Black |
| Container Size (Inch) | 1.69 fl oz (US) |
| Container Size (mm) | 50.0 ml |
| Flame Retardant | UL94 HB |
| Full Cure Time | 24 Hours @ 72 F (22 C) |
| Indoor/Outdoor | Both |
| Open Time | 20 min @ 72 °F (22 °C) |
| Physical Form | Flowable Liquid |
| Product Color | Black |
| Product Form | Cartridge |
| Product Number | DP420 |
| Product Type | Epoxy Adhesive |
| Set Time | Non Pertinent |
| Shear Strength | 4500.0 psi |
| Storage Temperature | 60-80 F (16-27 C) |
| Storage Temperature (Celsius) | 16°C - 27°C |
| Substrate 1 | Wood |
| Viscosity | Self-leveling |
| Viscosity Range (cps) at Room Temperature | 30,000 |
| Volume (Inch) | 1.69 fl oz |
| Volume (mm) | 50.0 mL |
What is 3M 7100148731 used for?
It is used for high-strength bonding and repairs on wood, metal, glass, ceramics and many plastics.
How long until 3M DP420 is fully cured?
Full cure is about 24 hours at 72°F (22°C); handling strength occurs earlier depending on the environment.
Can I dispense this cartridge with a 3M Two Part epoxy gun?
Yes, the 50 ml cartridge is compatible with standard two-part epoxy gun dispensers for DP420.
Is DP420 available in other colors besides black?
DP420 is commonly supplied in black; check distributors for any alternate color options or variants.
What is a “black liquid plastic that hardens” in relation to DP420?
DP420 behaves like a black liquid plastic that hardens; it flows into gaps, then cures to a hard, structural epoxy.
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