Wafer Slicing Saw Coolant Compressor Piston from Japan
High-precision piston for hermetic compressors that circulate coolant and slurry in diamond wire wafer slicing saws, cutting monocrystalline boules into thin semiconductor wafers. Ensures consistent pressure for uniform slicing without thermal distortion. Classified in 8414.90.41.55 for parts of semiconductor wafer preparation compressors under 8414.40.
Duty Rate — Japan → United States
25%
Rate breakdown
9903.82.0925%Except as provided for in headings 9903.82.16, 9903.82.20–9903.82.26 and 9903.85.68, articles of copper and derivative aluminum and steel articles, as provided for in subdivisions (c)(vi)–(viii) and (xi) of U.S. note 16 to this subchapter
9903.05.900%Articles of aluminum, of steel or of copper or derivative aluminum or steel articles; passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans and cargo vans) and light trucks; parts of passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans and cargo vans) and light trucks; medium- and heavy-duty vehicles; parts of medium- and heavy-duty vehicles; wood products; patented pharmaceutical articles; and semiconductor articles, as provided in subdivision (f) of U.S. note 52 to this subchapter
Import Tips
• Submit engineering specs showing pressure ratings compatible with wafer saw slurry systems
• Document cleanroom-grade materials to distinguish from industrial compressor parts