Ceramic wares for laboratory, chemical or other technical uses: — Articles having a hardness equivalent to 9 or more on the Mohs scale
N285514 · 2017-08-16 — The tariff classification of ceramic pistons and sleeves from Germany.
Samples were submitted with your ruling request and were forwarded to the Customs and Border Protection Laboratory for analysis. This analysis has been completed. The merchandise under consideration is five ceramic pistons with their accompanying sleeves. They are piston 26580, which measures approximately 18 millimeters (mm) high by 15 mm in diameter at its widest points, and sleeve 26582, which measures approximately 23 mm high by 20 mm diameter at its widest points; piston 26581, which measures approximately 18 mm high by 15 mm in diameter at its widest points, and sleeve 26583, which…
N271512 · 2016-04-14 — The tariff classification of a ceramic seal from China.
The merchandise under consideration is a ceramic seal, item number 1R1-500-0653. A sample was submitted with your ruling request and was forwarded to the Customs and Border Protection Laboratory for analysis. This analysis has been completed. The ceramic seal measures approximately .875 inches high by 1.8 inches in diameter at its widest points, and is made of silicon carbide ceramic. From the information you provided, this seal is designed to be used within a pump assembly to seal off media from the motor side of the pump. In your ruling request you suggest classification of the ceramic seal…
N236173 · 2013-03-08 — The tariff classification of a porcelain ceramic roller, ceramic diffuser disc, ceramic filter plate and a porcelain ceramic blank from Germany or China.
The merchandise under consideration is a roller for use in copper wire drawing, a diffuser disc for use in municipal wastewater systems, a mining filter plate used to separate ore from water, and a blank from which various articles may be machined. Samples of these items were submitted with your ruling request and were forwarded to the Customs and Border Protection Laboratory for analysis. This analysis has been completed. A fifth item, described as a filter drier core, was previously classified as 8421.29.0065 Harmonized Tariff Schedule of the United States (HTSUS) in ruling N236294, issued…
N190249 · 2012-02-07 — The tariff classification of a ceramic brick from Belgium.
The merchandise under consideration is a ceramic brick used to construct a zinc bath, which is part of a steel wire galvanizing line. Two samples of the brick were submitted with your ruling request; one will be returned to you, while the other was forwarded to the U.S. Customs and Border Protection Laboratory for analysis. This analysis has been completed. The brick measures approximately 9 inches long by 4 inches wide by 2.5 inches high at its widest points, tapering to a height of 2 inches. Laboratory analysis determined that the brick meets the definition of a refractory ceramic as set…
N112815 · 2010-10-03 — The tariff classification of a Diesel Particulate Filter from Japan.
The product under consideration is a Diesel Particulate Filter (DPF). The DPF is a cylindrical honeycomb filter designed for specific automobiles to improve diesel emissions. As imported, the subject DPF does not contain a catalyst coating. The filtration provided by the DPF operates primarily through mechanical and heat processes. Gas passes through the porous material, and the particulates are trapped and accumulate on the channel walls as soot. The DPF periodically regenerates, for example through the use of increased heat, to cleanse the DPF of soot. Each vehicle model for which a DPF is…
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