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SITCSection 2
U.S. imports of calcined gypsum & sulfate plasters, including dental plasters (SITC 27324) totaled $889K in April 2026, traded with 13 countries.
Importers of Calcined Gypsum & Sulfate Plasters, Including Dental Plasters paid $81K in duties in April 2026 — an effective duty rate of 9.9% on $814K in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 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.
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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.
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Monthly import values over time