3M™ Scotch-Weld™ Urethane Adhesive 605 is a two-part, non-sag, urethane adhesive. It provides a tough, flexible bond with good adhesion to a wide variety of substrates, especially wood and many properly abraded and cleaned plastics. Good adhesion can also be obtained on painted metals, ceramics, and glass.
Versatile polyurethane adhesive has excellent impact resistance and easily adheres to a variety of substrates
Low temperature flexibility and low shrinkage make it ideal for construction applications
Non-sag, flexible formula stays exactly where placed without slumping or spreading
5 minute work life allows for positioning and adjustment of substrates
3M™ Scotch-Weld™ Urethane Adhesive 605 is a semi-rigid, rapid-setting, two-part, polyurethane adhesive and sealant combination with low temperature flexibility and low shrinkage. These features make this urethane adhesive an ideal choice for bonding dissimilar substrates together and is typically used in the electronics, general industrial, maintenance and repair, and construction industries. The non-sag formula does not slump or spread after application, even on vertical surfaces. This adhesive reaches handling strength in 20-minutes, minimizing downtime by eliminating lengthy curing processes.
Two Parts, One Common Bond
The mix ratio is 1:1 for quick, precise dispensing, and with a 5-minute working time there's some opportunity for repositioning to keep projects on track. The adhesive reaches handling strength in approximately 20-minutes and is fully cured in 48-hours (at 72°F/22°C). This product is available in bulk and Duo-Pak cartridges.
Why Choose Urethane?
Urethane adhesives are two-part adhesives that are relatively flexible when cured, have excellent impact resistance and good adhesion to most plastics. They also bond well to woods, concrete and rubbers, but have reduced resistance to solvents and high temperatures. Uncured adhesive components are sensitive to moisture. Unlike one part polyurethane sealants, two part formulations cure faster with no depth-of-cure issues.
Polyurethane adhesives are part of the class of adhesives called "structural adhesives (PDF, 2.6 Mb)," which also includes acrylic, cyanoacrylate, and others. Polyurethanes begin as reactive liquid 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 need. This "work life" lasts anywhere from a few minutes to a few hours. This class of structural adhesives provides high shear and peel strengths, depending on the formula and better heat and chemical resistance than other common adhesives.
48 Hours @ 72 F (22 C)
65-70 Shore D
Construction, Military & Government, General Industrial, MRO, Woodworking