Skip to Primary Navigation Skip to Site Navigation Skip to Main Content All 3M.com Site Map

3M™ Scotch-Weld™ Urethane Adhesive DP640 Brown, 50 mL, 12 per case

3M ID  62354914350    UPC#  00021200895432    3M Product Number  640     
DP640
DP640
3M™ Scotch-Weld™ EPX™ Plus II Appl W 2:1 & 1:1 Plunger Model 91
3M™ Scotch-Weld™ Urethane Adhesive 640 is a two-part, non-sag urethane adhesive. This adhesive features non-sag and shear thinning properties that allow for accurate and precise application. 3M™ Scotch-Weld™ Urethane Adhesive 640 delivers tough, flexible bonds with good adhesion to a wide variety of substrates, especially wood and many properly abraded and cleaned plastics.
  • Strong adhesive provides tough, flexible bonds
  • Features non-sag and shear thinning properties for accurate application
  • Low viscosity for easy dispensing
  • Long work-life allows for time to reach optimal results
Need Help?

Questions? We can help

Contact Us

 

Overview

3M™ Scotch-Weld™ Urethane Adhesive 640
3M™ Scotch-Weld™ EPX™
Plus II applicator
Formulated for Flexibility and Accurate Application
Tough, flexible bonds can be achieved through 3M™ Scotch-Weld™ Urethane Adhesive 640, a two-part urethane adhesive. This urethane adhesive features non-sag and shear thinning properties for precise handling. Its long work-life (40-60 minutes) allows time for adjustments during the application process. In addition, 3M™ Scotch-Weld™ Urethane Adhesive 640 is formulated to have low viscosity for easy dispensing. This adhesive has a 1:1 mix ratio and reaches handling strength in approximately 8 hours, providing good adhesion to many substrates, especially wood and many properly abraded and cleaned plastics. 3M™ Scotch-Weld™ EPX™ Plus II applicator and mix nozzles are required for dispensing (not included).

Recommended Applications
3M™ Scotch-Weld™ Urethane Adhesive 640 can be used across many industries and have a wide variety of application possibilities, such as:
  • Bonding
  • Gluing
  • Joining
  • Attaching
  • Assembling
  • Repairing
  • Crack filling
  • Anchoring
  • Encapsulating
  • Potting
  • Sealing
The Basics of Urethane Adhesives
Polyurethanes are a class of polymers generally noted for their flexibility when cured. Two-part polyurethane adhesives comprise two components designed to be mixed, like an epoxy adhesive. The isocyanate, generally the accelerator or hardener side, reacts with the polyol or resin side when mixed, curing more quickly than one-part, moisture cure polyurethane systems, and with no depth of cure issues.

Urethane adhesives will work on most common materials such as wood, metals, rubbers, cured epoxy, leather, tile and glass, many plastics, concrete and more. The versatility of urethane adhesives comes from its chemical components; different formulations result in different stiffness, cure speed, hardness and other properties. These 2 component polyurethane structural adhesives can cure to be relatively rigid or more flexible to meet a wide range of requirements. Urethane adhesives will maintain bond strength integrity through variable environmental factors such as temperature, moisture and chemical exposure.

Get the Job Done with Precision
3M™ Scotch-Weld™ Urethane Adhesive 640 delivers tough, yet flexible, bonds. With an extended work-life as well as non-sag and thixotropic properties, you can be sure you have the time and the flexibility necessary to get the job done and reach the desired results.

Attributes

 Adhesive Type‎‎ Urethane
 Brand‎‎ Scotch-Weld
 Color‎‎ Brown
 Consumer Label‎‎ No
 Full Cure‎‎ 7 Days @ 72 F (22 C)
 Hardness‎‎ 50-60 Shore D
 Industries‎‎ Construction,‎ Military & Government,‎ General Industrial,‎ MRO,‎ Woodworking
 Mix Ratio Volume Base:Accelerator‎‎ 1 : 1
 Open Time‎‎ 40 minutes @ 72 F (22 C)
 Physical Form‎‎ Flowable Liquid
 Product Form‎‎ Each
 Product Type‎‎ Urethane Adhesive
 Set Time‎‎ 8 Hour
 Shear Strength at 72 Degrees F (22 Degrees C)‎‎ 2000 Pound-Force Per Square Inch
 Shelf Life‎‎ 12 months from date of shipment
 Specific Gravity‎‎ 1.29
 Storage Temperature‎‎ 72 Degree Fahrenheit
 Substrate 1‎‎ Plastics (High Performance Nylon),‎ Plastics (ABS, PVC, Acrylic),‎ Metal,‎ Glass & Ceramics,‎ Wood & Hardboard,‎ Rubber (Except EPDM),‎ EPDM Rubber
 Substrate 2‎‎ Plastics (High Performance Nylon),‎ Plastics (ABS, PVC, Acrylic),‎ Metal,‎ Glass & Ceramics,‎ Wood & Hardboard,‎ Rubber (Except EPDM),‎ EPDM Rubber
 Substrates‎‎ Plastics (High Performance Nylon),‎ Plastics (ABS, PVC, Acrylic),‎ Metal,‎ Glass & Ceramics,‎ Wood & Hardboard,‎ Rubber (Except EPDM),‎ EPDM Rubber
 Viscosity Range (cps) at Room Temperature‎‎ 25,000
 Volume (metric)‎‎ 50 ml