# HTS 6903: Other refractory ceramic goods (for example, retorts, crucibles, muffles, nozzles, plugs, supports, cupels, tubes, pipes, sheaths, rods and slide gates), other than those of siliceous fossil meals or of similar siliceous earths:

> Plain-language tariff reference from the USITC Harmonized Tariff Schedule on [PlainTariff](https://plaintariff.com/).

## Duty rates

- **General (MFN) rate:** Free

## Classification path

- **Section XIII:** [Stone, Plaster, Cement; Ceramic; Glass](https://plaintariff.com/section/xiii-stone-plaster-cement-ceramic-glass)
- **Chapter 69:** [Ceramic products](https://plaintariff.com/chapter/chapter-69-ceramic-products)
- **HTS code:** 6903

## Related tools

- [Tariff calculator](https://plaintariff.com/tools/tariff-calculator)
- [Search HTS codes](https://plaintariff.com/search)
- [Methodology & sources](https://plaintariff.com/methodology)

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*Source: U.S. International Trade Commission Harmonized Tariff Schedule. HTML canonical: https://plaintariff.com/heading/6903-other-refractory-ceramic-goods-for-example-retorts-crucib*