Steel Check Valve Spring for Wafer Polisher Slurry Lines from Mexico
High-tensile steel spring component in hand-operated check valves for unidirectional slurry flow in semiconductor wafer polishers. Under HTS 8481.90.3000 as steel part of check appliances in wafer prep equipment. Ensures mirror-finish wafer surfaces.
Duty Rate — Mexico → United States
15%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Specify spring constant and corrosion resistance; bundle with valve assembly docs; pitfall: undervaluation as generic springs