Copper Bellows for Wafer Lapping Machine Vacuum Pump from Canada
Flexible copper alloy bellows for stroke motion in vacuum pumps of wafer lapping machines (8426). Provides contamination-free vacuum for maintaining wafer flatness in semiconductor prep. 8431.49.90.92 for copper parts of wafer processing equipment.
Duty Rate — Canada → 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
• Cycle life and vacuum specs tailored to lapping prove principal use
• Cleanroom compatibility certification supports semiconductor classification