3M Scotch-Weld Epoxy Adhesive DP420NS is a black, toughened, non-sag, two-part epoxy structural adhesive that provides good strength along with high impact and fatigue resistance to meet demanding bonding challenges. 3M Scotch-Weld Epoxy Adhesive DP420NS can replace mechanical fasteners, screws, rivets and spot welds in many applications.
When using a Duo-Pak (DP) size adhesive, rely on 3M dispensing equipment for convenient and accurate metering, mixing and dispensing.
Recommended Applications
Formulated to provide strong adhesion for the long-term, this resilient epoxy is another way 3M has applied the expertise to meet and exceed the demands of even the toughest applications.
What are Epoxy Adhesives?
Epoxy adhesives, are part of the class of adhesives called “structural adhesives,” which also includes polyurethane, acrylic, cyanoacrylate and others. Epoxies are formulated as liquid reactive polymers that undergo a chemical reaction when mixed and then cure to form a solid plastic material. Once the two parts are mixed in their specified ratio, they begin the curing process and offer a limited work life (open time) where the adhesive can be applied and the two surfaces positioned as needed.
This work life lasts anywhere from a few minutes to several hours. These structural adhesives provide high shear and peel strengths, depending on the formula, and better heat and chemical resistance than other common adhesives. In general, epoxy adhesives have the highest overall strength and offer the best performance and most resistance to high temperatures, solvents and outdoor weathering.
Epoxy adhesives are widely used in building and home construction; aircraft and automobile manufacturing; bicycle, boat, golf clubs, ski and snowboard assembly as well as a host of home use and other applications. They are used virtually anywhere high-strength bonds are needed along with resistance to environmental conditions.
These adhesives are popular for their ease of use, mechanical strength and chemical resistance. Formulations can be created to make epoxies flexible or rigid, transparent or opaque, quick setting or slow setting. The versatility with which epoxy adhesives can be formulated helps meet almost any requirement for bonding wood, metal, glass, stone and various plastics.
Industrial uses for epoxies range widely and, in addition to adhesives, include coatings and composite materials like carbon fiber and glass-reinforced composites. They are the preferred choice due to their ability to flow and conform to the work area, strong adhesion, chemical and heat resistance and exceptional mechanical and electrical insulating properties.
| Pieces Per Case | 1 |
|---|---|
| Unit of Measure | Drum |
| Product Id | 7100084536 |
| Part Number | 3MABR-420NS |
| UPC | 00048011581330 |
| Weight | 458.2 lbs |
| Make to Order | Yes |
| Brand | Scotch-Weld™ |
| Container Size | 208.2 L, 55 gal |
| Volume | 162.8 L, 43 gal |
| Adhesive Type | Epoxy |
| Application | Encapsulating, Mounting, Small Joint Assembly, Trim attachment, Attaching, Bonding, Impact Resistance, Potting |
| Container Type | Drum |
| Design Challenges | Impact & Shock Absorption, Noise Vibration & Harshness Control NVH |
| Features | Low Odor |
| Full Cure Time | 24 Hours @ 73 F (23 C) |
| Hardness | 75 – 80 Shore D |
| Industries | Consumer Goods, Signage, Construction, Electronics, General Industrial, Metalworking, Military & Government, Specialty Vehicles, Transportation, Woodworking |
| Open Time | 20 min |
| Performance Level | Best |
| Physical Form | Liquid |
| Set Time | 2 hr |
| Shear Strength | 4270 psi |
| Specific Gravity | 1.15 |
| Specifications Met | UL 94 HB |
| Storage Temperature (Celsius) | 16°C – 27°C |
| Surface Type | Powder Coated, Painted, Smooth, Unpainted |
| Time to Handling Strength | 2.5 hr |
| Units per Case | 1.0 |
| Dimensions | 23.7 × 23.7 × 34.8 in |
