PU2105
Structural polyurethane adhesive · US · manufacturer-sourced
How long does ITW Plexus PU2105 take to dry?
Short answer
Bond-strength path
Hold, handle and full load come at different times
- Join the parts with the Structural polyurethane adhesive
- Hold or clamp for the set time
- Put load on the bond only at full strength
This product’s stated stages Quoted at 75°F
- Working time ends4 minutes
- Safe to handle25–30 minutes
- Full cure1 day
Worth noticing: Working time is only 4 minutes; the next stated stage, safe to handle, is 25–30 minutes.
Common mistake: Releasing the clamps because the glue line feels firm, long before it can carry a load.
Bond-strength path
Assembly, handling and full load are different stages
Time bond readiness
Your countdown
Stated times
- Working time ends4 minutes
- Safe to handle25–30 minutes
- Full cure1 day
From ITW Plexus data sheet · checked 2026-10-25. Anything not listed isn’t stated by the manufacturer.
Manufacturer website: plexus.com
Conditions & fine print
- Stated conditions: 75°F (24°C)
- Times depend on temperature, humidity, film or bead thickness and airflow. Follow the current data sheet and label.
- Region US. Formulas can differ between countries; check your container.
- Working time ends: At 25°C.
- Safe to handle: At 20°C.
- Full cure: At 75°F.
- Entered from the cited manufacturer documentation. Check the current label for the exact formula and region. Report outdated information
- Actual results depend on preparation, thickness, ventilation, temperature, humidity, mixing and substrate.
Confirm this is your product
Closely named formulas, colors and regional versions can use different times. Match these details to your container before starting a countdown.
- Exact listing
- ITW Plexus PU2105
- Variant
- Structural polyurethane adhesive
- Region
- US
- Listed use
- panel bonding, composites
- Timed stages recorded
- tooling, handle, full cure
- Source checked
- 2026-10-25
Documentation: Technical data sheet · Technical data sheet V.6, Feb 2022
Condition attached to the stated time: At 25°C.
About this product
A structural adhesive with a 3 to 4 minute work time and handling strength in half an hour. The work time is the tight number.
Using this specific product
ITW Plexus PU2105 is listed here as the Structural polyurethane adhesive version for panel bonding and composites. For bonding parts, the useful question is not simply whether the surface looks finished—it is whether the exact next-action milestone shown above has been reached.
Before you start
- Confirm the package says Structural polyurethane adhesive; related versions can use different timing.
- For panel bonding and composites, pay particular attention to surface fit, cleanliness, clamping pressure and bond-line thickness.
- At 25°C. At 20°C. At 75°F.
How to check readiness
Test a noncritical offcut or wait for the stated load milestone before stressing the joint. The sheet gives a work time of 3 to 4 minutes. Lift or move the item gently and avoid twisting the bond or pressing finished faces together. Reserve full cure for demanding use, chemicals, washing, immersion or load—not merely gentle handling.
Avoid this mistake
Handling strength and full load strength are different milestones.
Compare with similar products
- Compare with Loctite (Henkel) Super Glue Gel ControlHandling: 10 min there, 25–30 min here.
- Compare with Loctite (Henkel) Super Glue LiquidHandling: 10 min there, 25–30 min here.
Questions
How long does this product take to dry?
ITW Plexus states: The sheet gives a work time of 3 to 4 minutes. Conditions: At 25°C.. The sheet gives handling strength of 50 psi in 25 to 30 minutes. Conditions: At 20°C.. The sheet gives full strength within 24 hours. Conditions: At 75°F.. These are the manufacturer’s stated times, not a guarantee.
How long can I work Plexus PU2105?
The sheet gives 3 to 4 minutes at 25°C.
How long does this product take to fully cure?
ITW Plexus states: The sheet gives full strength within 24 hours. Conditions: At 75°F.. These are the manufacturer’s stated times, not a guarantee.
How long do I have to work with this product?
ITW Plexus states: The sheet gives a work time of 3 to 4 minutes. Conditions: At 25°C.. These are the manufacturer’s stated times, not a guarantee.
What affects how long this product takes to dry or cure?
Times depend on temperature, humidity, film or bead thickness and airflow. Follow the current data sheet and label. Follow the product label for your conditions.