U.S. exports of Ethylene-Propylene-Diene Rubber (EPDM) — Primary Forms, Plates, Sheets & Strip (HS 400270) totaled $42.9M in September 2026.
Importers of Ethylene-Propylene-Diene Rubber (EPDM) — Primary Forms, Plates, Sheets & Strip paid $1.2M in duties in September 2026, an average duty rate of 12.93% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: September 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.
206 import shipments a month
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.
Subheading 1 of 14 in heading 4002
Subheading 400270 · $42.9M of $240.3M
ImportsExports
Imports
$9.5MYoY · free account
Exports
$42.9MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to September 2026, the U.S. imported $101.4M of Ethylene-Propylene-Diene Rubber (EPDM) — Primary Forms, Plates, Sheets & Strip and exported $627.0M.
Through September 2026. Source: U.S. Census Bureau.
Trade Directory
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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 | Duty Collected |
|---|---|---|---|---|---|
| 4002700000 | Ethylene-Propylene-Nonconjugated Diene Rubber | $8.3M | 12.37% | 93.71% | $1.0M |
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 | $57.6M |
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.
Exports · September 2026
destination
Belgium and Mexico together take 49% of it.
customs district
origin
entry
rate provision · imports
0.7% enters free of duty; duty collected equals 12.93% of imports for consumption.