Harmonized System
U.S. imports of Natural Rubber in Smoked Sheets (HS 400121) totaled $15.4M in August 2026, imported from 15 countries.
Natural Rubber in Smoked Sheets imports of $15.4M in August 2026 ran 25% below the year-to-date monthly average of $20.6M.
Last updated: August 2026 dataRibbed smoked sheet (RSS) rubber is produced by coagulating field latex, rolling it into sheets, and smoking it in curing houses — a traditional processing method that imparts a characteristic amber color and distinct mechanical properties valued in tire and general rubber goods manufacturing. Thailand dominates US imports of this form, with Côte d'Ivoire and Indonesia also supplying meaningful volumes. The US schedule grades smoked sheets from Grade 1 (4001210010) through Grade 3 (4001210030), with an NESOI line (4001210050) covering off-grade or non-standard material; grade assignment follows the International Standards of Quality and Packing for Natural Rubber Grades (Green Book). Buyers should confirm grade certification at origin, as downgrading at port can affect contract pricing.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
172 import shipments a month
The grades reflect visual and physical quality standards set by the Green Book: Grade 1 (4001210010) permits minimal blemishes and no mold, Grade 2 (4001210020) allows slight oxidation or bubble marks, and Grade 3 (4001210030) tolerates more visible defects. Higher grades command price premiums and are preferred for precision rubber goods, while lower grades are typically used in general industrial applications where surface quality is less critical.
Thailand has the world's largest established Hevea plantation base, a mature processing infrastructure for RSS production, and long-standing trade relationships with US rubber compounders. Its dominance in this specific form — as opposed to technically specified grades — reflects the country's historical specialization in sheet rubber processing alongside its bulk TSNR output.
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Subheading 2 of 5 in heading 4001
Subheading 400121 · $15.4M of $112.4M
ImportsExports
Imports
$15.4MYoY · free account
Exports
$1.0MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $253.8M of Natural Rubber in Smoked Sheets and exported $10.2M.
Through August 2026. Source: U.S. Census Bureau.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share |
|---|---|---|---|---|
| 4001210030 | Natural Rubber in Smoked Sheets, Grade 3 | $14.1M | 0.00% | 0.00% |
| 4001210010 | Natural Rubber in Smoked Sheets, Grade 1 | $1.3M | 0.00% | 0.00% |
| 4001210020 | Natural Rubber in Smoked Sheets, Grade 2 | — | -- | -- |
| 4001210050 | Natural Rubber in Smoked Sheets, NESOI | — | -- | -- |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 4001210000 | Natural Rubber in Smoked Sheets | $1.0M |
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.
Imports · August 2026
origin
Thailand and Indonesia together supply 90% of it.
customs district
destination
entry
rate provision · imports
100.0% enters free of duty; duty collected equals 0.00% of imports for consumption.