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U.S. exports of ethylene-propylene-diene rubber (epdm) — primary forms, plates, sheets & strip (HS 400270) totaled $57.9M in July 2026.
Importers of Ethylene-Propylene-Diene Rubber (EPDM) — Primary Forms, Plates, Sheets & Strip paid $960K in duties in July 2026 — an effective duty rate of 11% on $8.4M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: July 2026 dataEPDM rubber's outstanding resistance to weathering, ozone, and heat makes it the dominant elastomer for automotive weather-stripping, roofing membranes, and wire and cable insulation. South Korea leads US import supply, followed by Japan and Germany — three countries that collectively host the world's major EPDM polymerization capacity. All imports are classified under tariff line 4002700000. Diene type and content, Mooney viscosity, and oil-extension level are the specification variables most commonly cited in purchase contracts.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
196 shipments/mo
No. Both oil-extended and non-extended EPDM in primary forms or as plates, sheets, and strip are classified under 4002700000, provided the product meets the HTS definition of synthetic rubber. The oil-extension level is a commercial specification, not a classification criterion, though it should be accurately described on the commercial invoice for valuation purposes.
The three main diene monomers used in EPDM production are ENB (ethylidene norbornene), DCPD (dicyclopentadiene), and VNB (vinyl norbornene). ENB-based grades cure faster and are preferred for automotive and wire applications; DCPD grades offer cost advantages for roofing. Buyers should specify diene type and content in purchase contracts because these parameters affect vulcanization behavior and end-product performance, even though all grades share the same HTS classification.
HSChapter 40
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Subheading 5 of 14 in heading 4002
Subheading 400270 · $9.5M of $114.4M
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 4002700000 | Ethylene-Propylene-Nonconjugated Diene Rubber | $9.5M | 10.10% | 88.06% | $960K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 4002700000 | Ethylene-Propylene-Nonconjugated Diene Rubber | $62.6M |
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.
ImportsExports
Imports
$9.5MYoY · Pro
Exports
$57.9MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
Exports · July 2026
destination
Belgium and Mexico together take 44% of it.
customs district
origin
entry
rate provision · imports
12.8% enters free of duty; the effective duty rate is 10.10%.