3M™ 2216 Part B/A Scotch-Weld Epoxy Adhesive , 2 Tubes Kit, 124 gr

3M™ 2216  Part B/A Scotch-Weld Epoxy Adhesive is a two-part, flexible, 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 it ideal for applications where vibration and thermal expansion and contraction are common. It also withstands very cold temperatures without becoming brittle. 

Because 3M™ 2216 can withstand temperatures up to -252°C  (-423°F),  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 93°C/200°F). It has a bonded shear strength that can withstand up to 3,200 psi at 72°F (24°C).

3M™ 2216  Part B/A Scotch-Weld Epoxy Adhesive is designed for applications where high performance and flexible bonds are required. Its flexibility makes it ideal for applications involving dissimilar surfaces and where differing coefficients of thermal expansion are a consideration. Once fully cured the epoxy maintains an extremely strong bond under expansion, contraction and limited movement while also maintaining a good retention of strength over time and after environmental aging. With a 2:3 mix ratio it is a low viscosity epoxy.

Recommended Applications

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