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HSChapter 40
U.S. imports of butadiene rubber (br) (HS 400220) totaled $5.5M in April 2026, traded with 19 countries.
Importers of Butadiene Rubber (BR) paid $551K in duties in April 2026 — an effective duty rate of 10% on $5.5M in dutiable value, based on actual customs collections rather than the published tariff schedule. Butadiene Rubber (BR) imports of $5.5M in April 2026 ran 16% above the year-to-date monthly average of $4.8M.
Last updated: April 2026 dataPolybutadiene rubber (BR) is prized for its exceptionally high resilience, low heat build-up, and abrasion resistance, making it a standard co-ingredient with SBR in tire tread compounds and a primary material for golf ball cores and conveyor belts. Japan and Taiwan are leading US suppliers, with Germany and South Korea also contributing, reflecting the concentration of BR production capacity in major petrochemical hubs. All forms — bales, crumbs, and other primary shapes — are classified under the single US tariff line 4002200000. Cis-content (high-cis vs. low-cis BR) is the key technical specification that determines suitability for tire versus non-tire applications.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
High-cis BR (typically >96% cis-1,4 content, produced with Ziegler-Natta or neodymium catalysts) delivers superior abrasion resistance and low rolling resistance critical for tire treads. Low-cis BR (produced with lithium catalysts) has different processing characteristics and is preferred for impact modification of plastics such as HIPS. Specifying cis-content in purchase contracts and certificates of analysis ensures the material meets end-use requirements and helps document the technical basis for any quality disputes.
BR from certain origins has been subject to antidumping duty investigations historically. Importers should verify current ADD/CVD order status through CBP's online reference tools and the USITC order list for the specific country of origin before each shipment, as scope and suspension agreements can change. A licensed customs broker can assist with scope ruling requests if the product's specifications create classification ambiguity.
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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 |
|---|---|---|---|---|
| 4002200000 | BUTADIENE RUBBER (BR) | $5.5M | 10.01% | $551K |
BUTADIENE RUBBER (BR)
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 4002200000 | BUTADIENE RUBBER (BR) | $37.3M |
BUTADIENE RUBBER (BR)
19.0M 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
| Port | Imports | Exports | Balance |
|---|---|---|---|
| HOUSTON, TX | $112K | $25.0M | +$24.9M |
| LAREDO, TX | $28K | $6.5M | +$6.5M |
| DETROIT, MI | $112K | $1.7M | +$1.6M |