U.S. exports of Calcined Gypsum & Sulfate Plasters, Including Dental Plasters (SITC 27324) totaled $4.7M in August 2026.
Importers of Calcined Gypsum & Sulfate Plasters, Including Dental Plasters paid $57K in duties in August 2026, an average duty rate of 13.82% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Calcined Gypsum & Sulfate Plasters, Including Dental Plasters imports of $410K in August 2026 ran 31% below the year-to-date monthly average of $593K.
Last updated: August 2026 dataCalcined gypsum and calcined sulfate plasters — including formulations with small quantities of accelerators or retarders — serve construction, industrial molding, and dental applications, with dental-grade plasters subject to stricter purity and setting-time specifications than building-grade products. The classification distinction between dental and non-dental plasters matters for tariff treatment, and importers should confirm whether accelerator or retarder additives affect the applicable heading. Dental plasters entering the US may be subject to FDA review as dental devices or materials, adding a regulatory layer beyond standard customs clearance.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
38 import shipments a month
Small quantities of accelerators or retarders are explicitly permitted within this heading and do not disqualify a product from classification here. However, if additives are present in quantities that fundamentally change the product's character — for example, transforming it into a finished construction compound — reclassification to another heading may be warranted. Consult a licensed customs broker to confirm the correct classification for your specific formulation.
Yes. Dental plasters and related materials may be regulated by the FDA as dental devices or materials, potentially requiring premarket notification or listing. Importers should verify FDA admissibility requirements before shipment. Classification and admissibility are complex; consult a licensed customs broker or the FDA for guidance specific to your product.
Basic heading 90 of 239 in section 2
Basic heading 27324 · $4.7M of $7.8B
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Exports · August 2026
destination
Canada and Japan together take 59% 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
$410KYoY · free account
Exports
$4.7MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $8.3M of Calcined Gypsum & Sulfate Plasters, Including Dental Plasters and exported $42.9M.
Through August 2026. Source: U.S. Census Bureau.