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HSChapter 40
U.S. imports of unvulcanized compounded rubber in primary forms (nesoi) (HS 400599) totaled $3.9M in April 2026, traded with 23 countries.
Importers of Unvulcanized Compounded Rubber in Primary Forms (NESOI) paid $375K in duties in April 2026 — an effective duty rate of 10% on $3.7M in dutiable value, based on actual customs collections rather than the published tariff schedule. Unvulcanized Compounded Rubber in Primary Forms (NESOI) imports of $3.9M in April 2026 ran 44% above the year-to-date monthly average of $2.7M.
Last updated: April 2026 dataCompounded unvulcanized rubber in primary forms—bales, pellets, crumbs, and similar bulk shapes—that do not fit the more specific carbon-black, silica, solution, or dispersion headings classifies under 4005990000. South Korea and Turkey are the leading US suppliers, reflecting significant synthetic-rubber compounding capacity in both countries, with Italy, Germany, and the United Kingdom also active. The breadth of the NESOI designation means classification disputes are common when compound formulations straddle multiple headings, making supplier documentation critical.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Importers should obtain a technical data sheet or certificate of analysis specifying the compound's filler type, polymer base, and physical form. If carbon black or silica is the primary filler, the goods belong under 400510; if the material is in solution or dispersion, it belongs under 400520. Only compounds that genuinely fall outside those descriptions should be entered under 4005990000.
South Korea is a US free-trade-agreement partner under KORUS, so qualifying originating goods may be eligible for reduced or zero duty rates. Importers must obtain a valid certificate of origin or equivalent documentation and confirm the goods meet KORUS rules-of-origin requirements to claim the preference.
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| Country | Imports | Exports | Balance |
|---|---|---|---|
| MEXICO | $186K | $4.5M | +$4.3M |
| KOREA, SOUTH | $1.7M | $834K | -$913K |
| COLOMBIA | -- | $1.7M | +$1.7M |
| BRAZIL | -- | $1.6M | +$1.6M |
| BELGIUM | -- | $1.5M | +$1.5M |
Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 4005990000 | COMPOUND RUB, UNVULCANIZED, IN PRIMARY FORM, NESOI | $3.9M | 10.02% | $375K |
COMPOUND RUB, UNVULCANIZED, IN PRIMARY FORM, NESOI
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 4005990000 | COMPOUND RUB, UNVULCANIZED, IN PRIMARY FORM, NESOI | $15.9M |
COMPOUND RUB, UNVULCANIZED, IN PRIMARY FORM, NESOI
4.0M kg
NEW PNEUMATIC TIRES OF RUBBER, FOR MOTOR CARS
HS 401110
NEW PNEUMATIC TIRES OF RUBBER, FOR BUSES OR TRUCKS
HS 401120
GASKET, WASHERS & OTHER SEALS, OF VULCANIZED RUB
HS 401693
ARTICLES OF SOFT VULCANIZED RUBBER NESOI
HS 401699
MEDICAL/SURGICAL/DENTAL/VET GLOVES, MITTENS, MITTS
HS 401512
NEW PNEUMATIC TIRES OF RUBBER, NESOI
HS 401190
| State | Imports | Exports | Balance |
|---|---|---|---|
| Connecticut | -- | $3.8M | +$3.8M |
| Alabama | -- | $3.6M | +$3.6M |
| Illinois | $13K | $2.6M | +$2.6M |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| MOBILE, AL | $1.7M | $3.6M | +$1.8M |
| NEW YORK, NY | -- | $3.0M | +$3.0M |
| LAREDO, TX | $168K | $2.5M | +$2.3M |