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SITCSection 2
U.S. exports of synthetic rubber and factice derived from oils, nes (SITC 23219) totaled $25.7M in July 2026.
Importers of Synthetic Rubber and Factice Derived from Oils, NES paid $1.2M in duties in July 2026 — an effective duty rate of 11% on $11.0M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: July 2026 dataThe 'not elsewhere specified' category for synthetic rubber captures specialty elastomers and factice — a vulcanized oil product used as a rubber extender and processing aid — that do not fit the named polymer headings in the 232.1 group. Factice, produced by treating vegetable or mineral oils with sulfur or sulfur chloride, is used in pencil erasers, printing rollers, and cable insulation compounds, and its classification here rather than under chemical headings is a common source of importer confusion. Specialty thermoplastic elastomers (TPEs) and other novel synthetic rubbers that lack a dedicated heading may also fall here, making a binding ruling advisable for any product whose polymer identity is not clearly one of the named types.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
274 shipments/mo
Basic heading 51 of 239 in section 2
Basic heading 23219 · $12.6M of $3.8B
Factice is produced by reacting drying or semi-drying oils (such as rapeseed or linseed oil) with sulfur or sulfur chloride rather than by polymerizing monomers. The result is a soft, spongy material used as a processing aid and extender in rubber compounds — particularly in erasers and printing rollers — rather than as a structural elastomer. Its oil-derived origin and non-polymerized structure distinguish it from all other synthetic rubbers in the 232 group.
A binding ruling is advisable whenever the product is a novel or proprietary elastomer — such as a thermoplastic vulcanizate (TPV), silicone-modified rubber, or specialty block copolymer — that does not clearly match the named polymer types (SBR, BR, IIR, CR, NBR, IR, EPDM). The NES heading is a residual category, and misclassification into or out of it can affect duty liability and trade-remedy exposure.
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Exports · July 2026
destination
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.
ImportsExports
Imports
$12.6MYoY · Pro
Exports
$25.7MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.