Loading...
SITCSection 6
U.S. imports of ceramic goods of siliceous fossil meals or similar siliceous earths (SITC 66231) totaled $395K in April 2026, traded with 16 countries.
Importers of Ceramic Goods of Siliceous Fossil Meals or Similar Siliceous Earths paid $44K in duties in April 2026 — an effective duty rate of 11% on $395K in dutiable value, based on actual customs collections rather than the published tariff schedule. Ceramic Goods of Siliceous Fossil Meals or Similar Siliceous Earths imports of $395K in April 2026 ran 58% above the year-to-date monthly average of $250K.
Last updated: April 2026 dataBricks, blocks, tiles, and other ceramic articles manufactured from diatomite (diatomaceous earth), kieselguhr, tripolite, or similar siliceous fossil meals are classified here — a specialized refractory and filtration-industry heading distinct from conventional clay-based ceramics. These high-porosity, low-density ceramic goods are prized for thermal insulation in kilns and furnaces, as well as for filtration media in food processing, brewing, and water treatment. The raw material — siliceous fossil meal rather than clay or kaolin — is the defining classification criterion, and importers should obtain mineralogical or compositional analysis from the supplier to support the classification. Products in this heading are industrial commodities and do not require food or agricultural agency admissibility review.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Conventional refractory bricks are made from high-alumina clays, silica, magnesia, or similar refractory minerals and fall under separate ceramic or refractory headings. Siliceous fossil meal ceramics are specifically manufactured from biogenic silica — diatomite, kieselguhr, or tripolite — giving them a distinctive microporous structure. A mineralogical analysis or manufacturer's raw-material declaration is the standard way to establish this distinction at customs.
Trade-remedy applicability depends on the specific product form, origin, and the applicable 10-digit HTS tariff line. Importers sourcing these ceramic goods from China should check whether the relevant HTS line falls within the scope of Section 301 tariffs, as coverage of industrial ceramic products from China is broad but product-specific. Consulting a licensed customs broker before the first shipment is advisable.
| Country | Imports | Exports | Balance |
|---|---|---|---|
| CANADA | -- | $228K | +$228K |
| CHINA | $122K | -- | -$122K |
| POLAND | $96K | -- | -$96K |
| ANTIGUA AND BARBUDA | -- | $69K | +$69K |
| UNITED KINGDOM | $55K | $3K | -$53K |
Supplier Network
Get discovered by U.S. importers searching for HS 66231 — Ceramic Goods of Siliceous Fossil Meals or Similar Siliceous Earths. Be the first supplier listed.
Monthly import values over time