U.S. exports of Natural Rubber (Other Than Latex), N.E.S., in Primary Forms (SITC 23129) totaled $1.0M in August 2026.
Importers of Natural Rubber (Other Than Latex), N.E.S., in Primary Forms paid $3K in duties in August 2026, an average duty rate of 1.63% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Natural Rubber (Other Than Latex), N.E.S., in Primary Forms imports of $180K in August 2026 ran 88% below the year-to-date monthly average of $1.5M.
Last updated: August 2026 dataA residual category for natural rubber in primary forms — including crepe rubber, air-dried sheets, and other processed forms not captured by smoked sheets or TSNR grades — this heading serves specialty compounders who require specific processing characteristics unavailable in standard grades. Pale crepe and sole crepe, for example, are used in footwear and pharmaceutical applications where color and purity are paramount. Because the heading aggregates diverse processing forms, importers should document the specific rubber type and processing method in entry paperwork to support accurate HTS classification and avoid reclassification at the port.
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27 import shipments a month
This heading captures natural rubber in primary forms not classified as latex, smoked sheets, or TSNR — including pale crepe, brown crepe, sole crepe, and air-dried sheet (ADS). Each form has distinct processing characteristics: pale crepe is prized for its light color in footwear and medical applications, while brown crepe is typically produced from lower-grade coagulum and used in general compounding.
Accurate classification requires documenting the specific processing method and physical form — crepe, sheet, or other — on the commercial invoice and entry summary. Because this is a residual heading, CBP may scrutinize whether a product belongs here or under a more specific rubber heading. Working with a licensed customs broker and providing a detailed product specification sheet helps prevent reclassification and potential duty adjustments.
Basic heading 138 of 239 in section 2
Basic heading 23129 · $1.0M of $7.8B
Exports · August 2026
destination
Mexico and Canada together take 97% of it.
customs district
Census does not publish district detail for this classification system.
origin
Census does not publish state detail for this classification system.
entry
Census does not publish port detail for this classification system.
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12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $15.8M of Natural Rubber (Other Than Latex), N.E.S., in Primary Forms and exported $10.7M.
Through August 2026. Source: U.S. Census Bureau.