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HSChapter 40
U.S. imports of mixtures of natural and synthetic rubber (HS 400280) totaled $79K in July 2026, traded with 11 countries.
Last updated: July 2026 dataBlends of natural rubber or similar natural gums with synthetic rubber — and factice derived from oils — occupy a specialized classification niche under heading 4002, covering compounds that combine the resilience of natural rubber with the chemical or thermal resistance of synthetic polymers. France and Mexico are the leading US suppliers. Imports from Mexico may qualify for USMCA preferential tariff treatment, subject to applicable rules of origin. The single US tariff line is 4002800000, and accurate blend-ratio documentation is essential because misclassification between pure synthetic rubber and a natural/synthetic mixture is a common audit finding.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
6 shipments/mo
The HTS does not specify a minimum natural rubber content threshold; classification as a mixture under heading 4002 depends on whether the product is a deliberate blend of natural rubber (heading 4001) with synthetic rubber (heading 4002) or factice. A product that is predominantly synthetic rubber with only incidental natural rubber content may still classify as a pure synthetic rubber. Importers should document the formulation and consult a licensed customs broker or seek a binding ruling when the blend ratio is near a classification boundary.
Factice is a rubber-like material produced by treating vegetable or animal oils with sulfur or sulfur chloride. When blended with natural or synthetic rubber, the resulting mixture still classifies under heading 4002 (specifically 4002800000) provided it meets the general definition of a rubber mixture in that heading. Factice alone, without rubber, classifies elsewhere, so the presence and proportion of factice relative to rubber content should be clearly stated in product documentation.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 4002800000 | Mixtures of Product Hdg 4001 With Product Hdg 4002 | $79K | 6.19% | 61.85% | $5K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 4002800000 | Mixtures of Product Hdg 4001 With Product Hdg 4002 | $34K |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
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ImportsExports
Imports
$79KYoY · Pro
Exports
$34KYoY · Pro
12-mo low · imports
YoY · ProFewer than 6 of the last 12 months reported trade above $500K; the trend chart is not shown for thin series.
Through July 2026. Source: U.S. Census Bureau.
Imports · July 2026
origin
France and Mexico together supply 96% of it.
customs district
destination
entry
rate provision · imports
38.1% enters free of duty; the effective duty rate is 6.19%.