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U.S. exports of other ethylene polymers in primary forms (nesoi) (HS 390190) totaled $71.4M in July 2026.
Importers of Other Ethylene Polymers in Primary Forms (NESOI) paid $2.4M in duties in July 2026 — an effective duty rate of 14% on $16.4M in dutiable value, based on actual customs collections rather than the published tariff schedule. Other Ethylene Polymers in Primary Forms (NESOI) imports of $20.1M in July 2026 ran 13% above the year-to-date monthly average of $17.7M.
Last updated: July 2026 dataHeading 390190 is a residual catch-all for ethylene polymers not classified elsewhere in Chapter 39, covering elastomeric grades (3901901000), ethylene copolymers (3901905501), and other primary-form materials (3901909000). China is the leading US supplier under this heading, followed by France and Japan, making Section 301 tariff exposure a key cost consideration for Chinese-origin shipments. The elastomeric subheading captures specialty grades used in seals, gaskets, and vibration-damping components, while the copolymer line encompasses a broad range of functional resins. Precise classification within the three lines depends on whether the material is elastomeric and on its specific copolymer chemistry.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
490 shipments/mo
CBP generally applies the Chapter 39 note definition of elastomeric: the material must be capable of being stretched to at least twice its original length at room temperature and return substantially to its original dimensions upon release. Technical data sheets and stress-strain test results are the standard supporting documentation for this classification.
Chinese-origin goods classified under heading 390190 are subject to Section 301 tariffs, which add to the landed cost relative to equivalent material from France, Japan, or Canada. Importers have responded by qualifying alternative suppliers or seeking first-sale valuation strategies, but any origin-shifting must be supported by genuine manufacturing activity to avoid transshipment concerns.
HSChapter 39
Subheading 5 of 5 in heading 3901
Subheading 390190 · $20.1M of $428.8M
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 |
|---|---|---|---|---|---|
| 3901909000 | Polymers of Ethylene in Primary Form,NESOI | $10.2M | 11.03% | 85.93% | $1.1M |
| 3901901000 | Polymers of Ethylene in Primary Form,Elastomeric | $6.4M | 13.45% | 85.41% | $857K |
| 3901905501 | Ethylene Copolymers | $3.5M | 10.54% | 62.75% | $369K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 3901905501 | Ethylene Copolymers | $35.7M |
| 3901909000 | Polymers of Ethylene in Primary Form,NESOI | $19.5M |
| 3901901000 | Polymers of Ethylene in Primary Form,Elastomeric | $16.2M |
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
$20.1MYoY · Pro
Exports
$71.4MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
Exports · July 2026
destination
Mexico and Belgium together take 43% of it.
customs district
origin
entry
rate provision · imports
17.8% enters free of duty; the effective duty rate is 11.71%.