Swift®lock 2U340 is a single-component, fully reactive hot melt adhesive that cross-links through a chemical reaction with moisture found in the surrounding air and substrates, to produce a thermoset adhesive. 2U340 was specifically formulated for difficult to bond plastics, such as ABS and vinyl, to a wide variety of metals. 2U340 was designed to provide a good balance of properties. The rheology of the product gives excellent release from roll coaters and no stringing of adhesive. The open time of three minutes is sufficient for assembly of a wide variety of applications. Green strength development of greater than 50 psi in 15 seconds holds difficult substrates together after combining. Long term aging studies show excellent retention of adhesive properties.

Chemical Family: Polyurethanes (PU)

Product Type: 1K (1 component) Adhesive, Hot Melt Adhesive, Reactive Adhesive

Application Area: Engineered Wood Flooring, Interior Panel, Panels, Woodwork

Application Method: Roll Coater

Compatible Substrates & Surfaces: Acrylonitrile Butadiene Styrene (ABS), Coated Surfaces, Composites, Metal, Plastics, Polybutylene Terephthalate (PBT), Polycarbonate (PC), Polypropylene (PP), Vinyl, Wood

Features: Chemical Resistant, Excellent Moisture Resistance, Good Adhesion, Good Bonding Strength, Good Cold Resistance, Good Green Strength, Good Peeling Strength, Heat Resistance, High Flexibility, Long Open Time, Low Temperature Performance

Technical Data Sheet
Message our experts with questions
Robert Blackstone avatar

Robert Blackstone

Global Leader - Inside Sales

Please reach out to me with any questions, I am happy to assist you in finding the right product or learning more about our storefront

Enhanced TDS

Identification & Functionality

Features & Benefits

Applications & Uses

Application Area
Application Method
Compatible Substrates & Surfaces
Cure Method
Application and Cleaning Information
  • Product is ready-to-use as received; do not dilute hot melt adhesive.
  • Confirm compatibility before making hot melt adhesive changes.
  • To clean up spilled adhesive, allow the adhesive to cool to room temperature and scrape off heavy deposits with a putty knife. Any uncured residual film may be wiped clean with a common polyurethane solvent (toluene, MEK). Clean up the adhesive before it cures.


Physical Form
Material Specifications
ValueUnitsTest Method / Conditions
Solid Content100.0%-
Open Time180.0s-
Green Strength Build (at 77°F, 15 sec, 50% RH)min. 50psi-
Tensile Strength4500.0psiASTM D638
Elongation at Break800.0%ASTM D638
2% Secant Modulus16000.0psi-
Softening Point150.0°F-
Cure Rate (at 21 - 25°C, 45 - 55% relative humidity, in 24h)*75.0%-
Rheological Properties
ValueUnitsTest Method / Conditions
Viscosity (at 250 °F)19000.0cP-

* - dependent upon moisture and temperature

Safety & Health

Safety and Disposal
  • Use with local exhaust ventilation to remove MDI (isocyanate) vapors anywhere heated product is exposed to air including adhesive un-loaders, pre-melters, and application areas. Local exhaust ventilation may be required to maintain exposures at safe levels.
  • Users of reactive hot melt polyurethane adhesives should maintain an ongoing industrial hygiene program which should include employee training, monitoring of MDI levels, and ongoing verification of ventilation system performance.

Packaging & Availability

Country Availability
Regional Availability
  • North America
  • USA

Storage & Handling

Shelf Life
6 Months
Storage Condition

To ensure maximum stability, product should be stored in the original closed container in an interior location capable of maintaining a constant temperature and a cool dry environment.