Liquid PUR (moisture-cured polyurethane) is liquid at room temperature and is not tacky when first applied. Bonded parts must be pressed and held or clamped during the initial cure. The bond forms by reaction with moisture from the substrate or environment.
These adhesives form durable bonds that hold up in high and low temperature extremes. Typical uses include gluing carpet, wood, foam, metal, and most plastics to each other. Not recommended for vinyl (PVC), polypropylene, polyethylene, or other polyolefins.
How it differs from PUR hot melt
- Liquid PUR — room temperature; clamp while it starts to cure; no melt applicator.
- PUR hot melt — applied molten, then moisture-cures to a thermoset; melt tank / cartridge systems.
Looking for reactive hot melt PUR for panels, wood, or assembly? See PUR Hot Melt Adhesives.
When liquid PUR is the better tool
Choose liquid moisture-cured polyurethane when the plant cannot or should not run a melt applicator: carpet and textile to wood, foam builds, general product assembly that can be clamped during initial cure, and metal/many plastics where a room-temp bead is preferred. Avoid vinyl (PVC), PP, PE, and other polyolefins unless we specify a different system.
We can formulate / related systems
Viscosity and open time for your dispense method; fixture time vs humidity; final rigidity. We also supply 2-part polyurethanes and epoxy adhesives when a one-component liquid PUR is not the right chemistry — call for SDS/TDS.
Handling notes
Not tacky when first applied — parts must be pressed/clamped through initial cure. Full properties develop as moisture cure completes. Store sealed; moisture in the container shortens shelf life.
Product number
| Product number | Use |
|---|---|
| 8730 | One-component cold liquid moisture-cured polyurethane (room temp, ~7000 cps at 74°F). General-purpose structural liquid PUR. Not for vinyl, PP, PE, polyolefins. Clamp during initial cure. Permanent, rigid final bond. |
We also supply 2-part polyurethanes and epoxy adhesives. Call for SDS/TDS or a sample.
Typical applications
- Wood, foam, and product assembly where a room-temp liquid is preferred
- Carpet and textile bonding to wood or other substrates
- Metal and many plastics (confirm substrate—avoid PE/PP/PVC unless we specify a different system)
Call 800-249-0337 or request a sample.
