U.S. exports of Polyacetals, Primary Forms (SITC 57411) totaled $33.4M in August 2026.
Importers of Polyacetals, Primary Forms paid $951K in duties in August 2026, an average duty rate of 11.24% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Polyacetals, Primary Forms imports of $8.5M in August 2026 ran 30% above the year-to-date monthly average of $6.5M.
Last updated: August 2026 dataPolyacetals — commercially known as polyoxymethylene (POM) or acetal resin — are engineering thermoplastics prized for dimensional stability, low friction, and fatigue resistance in precision mechanical components such as gears, bearings, and fuel system parts. POM is traded in primary forms (pellets or granules) and is a key input for the automotive, consumer electronics, and industrial machinery sectors. Imports from China are subject to Section 301 tariffs, a cost factor that has prompted some US buyers to diversify sourcing toward producers in Japan, Germany, and South Korea.
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305 import shipments a month
Homopolymer acetal (Delrin-type) offers higher stiffness and surface hardness, while copolymer acetal provides better thermal and chemical stability with fewer centerline voids. Both are classified as polyacetals under this heading, but their distinct processing characteristics mean buyers should specify the grade clearly in purchase contracts and import documentation.
Section 301 tariffs on Chinese-origin polyacetal pellets have increased landed costs for US compounders and molders, prompting evaluation of alternative suppliers in Japan, Germany, and South Korea. Importers should confirm the current Section 301 list status of the applicable HTS subheading and assess whether first-sale valuation or other duty-mitigation strategies are appropriate.
Basic heading 133 of 465 in section 5
Basic heading 57411 · $33.4M of $26.2B
Exports · August 2026
destination
China and Mexico together take 50% 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.
ImportsExports
Imports
$8.5MYoY · free account
Exports
$33.4MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $85.2M of Polyacetals, Primary Forms and exported $330.1M.
Through August 2026. Source: U.S. Census Bureau.
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