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3M™ Scotch-Weld™ Epoxy Adhesive DP420NS Black, 400 mL, 6 per case Duo-Pak

3M ID  62329935324    UPC#  00021200392870    3M Product Number  420NS     
3M(TM) Scotch-Weld(TM) Epoxy Adhesive DP420NS Black 6.7 oz
3M(TM) Scotch-Weld(TM) Epoxy Adhesive DP420NS Black 6.7 oz
3M™ Scotch-Weld™ Epoxy Adhesive 420NS is a non-sag, two-part epoxy formulated to be durable and tough. This epoxy adhesive absorbs impact, resists vibration and fatigue and provides high shear and peel strength. 3M™ Scotch-Weld™ Epoxy Adhesive 420NS is capable of providing durable and dependable adhesion for some of the most demanding applications.
  • Non-sag, two-part epoxy features controlled flow and application
  • Capable of absorbing impact and resisting vibration and fatigue, providing long-term durability
  • Withstands powdercoating processes
  • High shear and peel strength for durable and dependable adhesion
  • 20-minute work life allows time for adjustment during application
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Formulated for Tough Environments
3M™ Scotch-Weld™ Epoxy Adhesive 420NS is a toughened, two-part epoxy that offers excellent shear and peel strength. This non-sag epoxy provides controlled flow for optimal results during application. In addition, its elastomeric additives absorb impact and resist vibration and fatigue. These features make 3M™ Scotch-Weld™ Epoxy Adhesive 420NS an excellent choice for some of the most demanding end-use applications. With a 20-minute work life, 3M™ Scotch-Weld™ Epoxy Adhesive 420NS allows time for adjustment during application. It reaches handling strength in 2 hours. This product has a 2:1 mix ratio and bonds extremely well to many surfaces, such as metals, epoxy-based composites, ceramics, glass, wood and some plastics.

Recommended Applications
3M™ Scotch-Weld™ Epoxy Adhesive 420NS is used across many industries. Some of the recommended applications include:

  • Small joint assembly
  • Heavy-duty mounting assembly
  • Metalworking
  • Carbon fiber epoxy bonding

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 working 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.

Long-Lasting Adhesion
3M™ Scotch-Weld™ Epoxy Adhesive 420NS is appropriate for applications that will face tough environmental challenges. Formulated to provide strong adhesion for the long-term, this resilient non-sag epoxy is another way 3M has applied our expertise to meet and exceed the demands of even the toughest applications.


 Adhesion Strength‎‎ 960 oz/in
 Adhesive Type‎‎ Epoxy
 Applications‎‎ Hard Disk Drive Component Assembly,‎ Bonding
 Brand‎‎ Scotch-Weld
 Color‎‎ Black
 Consumer Label‎‎ No
 Full Cure‎‎ 24 Hours @ 72 F (22 C)
 Hardness‎‎ 75-80 Shore D
 Industries‎‎ Transportation,‎ Specialty Vehicle,‎ Construction,‎ Military & Government,‎ General Industrial,‎ Electronics,‎ Consumer Goods
 Mix Ratio Volume Base:Accelerator‎‎ 2 : 1
 Open Time‎‎ 20 minutes @ 72 F (22 C)
 Physical Form‎‎ Flowable Liquid
 Product Form‎‎ Each
 Product Type‎‎ Epoxy Adhesive
 Set Time‎‎ 2 Hour
 Shear Strength at 72 Degrees F (22 Degrees C)‎‎ 4500 Pound-Force Per Square Inch
 Shelf Life in Months (from date of manufacture)‎‎ 15
 Specific Gravity‎‎ 1.14
 Storage Temperature‎‎ 72 Degree Fahrenheit
 Substrate 1‎‎ Bare Metal,‎ Polyolefin Foam,‎ Metal,‎ Glass & Ceramics,‎ Stainless Steel,‎ Glass,‎ Ceramic
 Substrate 2‎‎ Bare Metal,‎ Polyolefin Foam,‎ Metal,‎ Glass & Ceramics,‎ Stainless Steel,‎ Glass,‎ Ceramic
 Substrates‎‎ Metal,‎ Glass & Ceramics
 Viscosity Range (cps) at Room Temperature‎‎ 180,000
 Volume (metric)‎‎ 400 ml