3M™ Scotch-Weld™ Epoxy Adhesive 2216, Gray, Part B/A, 1 Gallon Kit, 2/case
3M Scotch-Weld Epoxy Adhesive 2216 is a flexible, two-part epoxy adhesive that cures at room temperature. It provides a high strength bond with both high shear and peel strength while remaining highly flexible, making 3M Scotch-Weld Epoxy Glue 2216 ideal for applications where vibration and thermal expansion and contraction are common. It also withstands very cold temperatures without becoming brittle.
7-10 days + transit lead time.
- Cryogenic bonding applications where bonded agents might experience temperature extremes
- Potting where expansion and thermal changes may occur, such as solar panels and appliance or construction applications
- Military bonding applications, for example bonding parts on movable transports
- General aerospace and transportation bonding where vibrations and movement are common
- Bonding ceramic, most plastics and glass to metal
- Attaching various substrates to masonry and stone
Excellent for Cryogenic Bonding Applications
We’ve designed the 3M Scotch-Weld Epoxy Adhesive 2216 to perform under extremely frigid temperatures. Because it can withstand temperatures up to -423°F (-252°C), it is ideal for cryogenic bonding applications. At room temperature it offers a 90 minute work life to allow for repositioning and adjustments. It will slowly cure over 7 days, but can be heat cured to reduce this to as little as 30 minutes (at 200°F/93°C.) It has a bonded shear strength that can withstand up to 3,200 psi at 72°F (24°C).
Understanding Epoxy Adhesives
Epoxy adhesives, including 5 minute epoxy, are part of the class of adhesives called “structural adhesives,” which include 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 adhesive (often referred to as epoxy glue) is 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. It is 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 epoxy for plastic flexible or epoxy for metal rigid, epoxy resin transparent or opaque, quick setting or slow setting. The versatility with which these adhesives can be formulated helps meet almost any requirement for bonding wood, metal, glass, stone and various plastics.
Fundamentals of Adhesion
(links to 3M Resources)
- Bonding and Assembly
- Adhesion Basics: Introduction to the Science of Adhesion
- Adhesive Bond Strength Resource Page
- Assembly Applications
- Benefits of Adhesives and Tapes
- Adhesives and Tape Formats
- How Does Adhesion Work?
- Choosing Industrial Adhesives and Tapes