Polyurethane Construction Adhesive
A moisture-curing polyurethane cement designed for bonding wood, concrete, and metal in construction applications. Classified under HTS 3909.50.2000 as it is a polyurethane-based cement in primary form, where polyurethane monomers constitute 95% or more by weight per chapter notes. Primarily used for structural bonding rather than bulk polymer resin.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If acrylic or vinyl polymer-based
Adhesives prepared on a base of acrylic polymers fall under Chapter 35 as specific adhesive preparations, not Chapter 39 polymers.
If sold as retail caulk/sealant with >50% solvent
Retail mastics and caulks exceeding 50% solvent content shift to Chapter 32 glaziers' putty, regardless of polymer base.
If for industrial bulk use as polyester resin cement
If polyester monomers predominate over polyurethane, it classifies under polyesters per subheading note (a)(4).
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Import Tips & Compliance
• Verify polyurethane monomer content exceeds 95% by weight via lab testing to meet subheading note (a)(1); provide supplier certificates of analysis
• Common pitfall: misclassifying as finished sealant under 3214 if over 50% solvent
• Declare as 'primary form' to avoid parts classification
Related Products under HTS 3909.50.20.00
Polyurethane Woodworking Glue
One-component polyurethane cement for gap-filling wood joints, expanding on curing for strong bonds in furniture making. Falls under 3909.50.2000 as polyurethane cement in primary form with ≥95% polyurethane content. Distinguished from prepared glues by lack of extensive formulation.
Polyurethane Concrete Bonding Cement
High-strength polyurethane cement for anchoring rebar and bonding new concrete to old surfaces in civil engineering. HTS 3909.50.2000 applies to this primary-form polyurethane cement meeting 95% monomer purity. Used in bulk for mixing on-site.
Polyurethane Foam Adhesive Cement
Expanding polyurethane cement for insulating foam board installation and gap filling in building envelopes. Classified in 3909.50.2000 as polyurethane cement in primary form, with predominant polyurethane monomers. Supplied in bulk drums for professional use.
Industrial Polyurethane Laminating Cement
Two-part polyurethane cement for laminating films to substrates in flexible packaging production. HTS 3909.50.2000 covers this primary polyurethane resin cement with ≥95% qualifying monomers. Used in high-speed industrial coaters.
Polyurethane Shoe Sole Cement
Contact polyurethane cement for bonding rubber soles to leather uppers in footwear manufacturing. Falls under 3909.50.2000 as primary-form polyurethane cement per 95% monomer rule in chapter notes. Bulk-supplied for factory dipping.
Marine Polyurethane Deck Cement
Water-resistant polyurethane cement for teak deck caulking and bonding on boats and ships. Classified 3909.50.2000 as polyurethane cement in primary form meeting polymer purity standards. Professional marine-grade formulation.