Wafer Slicing Saw Coolant Compressor Piston from Germany
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 — Germany → 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 already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Submit engineering specs showing pressure ratings compatible with wafer saw slurry systems
• Document cleanroom-grade materials to distinguish from industrial compressor parts