Other
Air or vacuum pumps, air or other gas compressors and fans; ventilating or recycling hoods incorporating a fan, whether or not fitted with filters; gas-tight biological safety cabinets, whether or not fitted with filters; parts thereof: > Parts: > Of compressors: > Other > Other: > Of compressors of subheading 8414.40: > Other
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]
Products classified under HTS 8414.90.41.55
Float Zone Crystal Grower Vacuum Pump Rotor
The rotor assembly for hermetic vacuum pumps in float zone crystal growers, enabling ultra-high vacuum (UHV) conditions for producing pure monocrystalline semiconductor rods from polycrystalline silicon. This part handles the compression of process gases during zone melting. Falls under 8414.90.41.55 as a component of 8414.40 compressors in semiconductor wafer manufacturing apparatus.
Crystal Grinder Pneumatic Compressor Cylinder
Cylinder housing for hermetic pneumatic compressors powering the grinding spindles in crystal grinders that shape semiconductor boules to precise wafer diameters and flats. Provides contamination-free compressed air for high-speed precision grinding. Under 8414.90.41.55 as part of 8414.40 compressors for wafer preparation equipment.
Silicon Wafer Polisher Vacuum Compressor Manifold
Multi-port manifold for hermetic vacuum compressors supplying precisely controlled suction in silicon wafer polishers, achieving mirror-finish surfaces for device fabrication. Distributes clean dry air/vacuum to polishing pads. Part of 8414.40 compressors under 8414.90.41.55 for semiconductor wafer prep equipment.
Gallium Arsenide Crystal Grower Hermetic Compressor Motor
Brushless motor specifically designed for hermetic compressors in GaAs crystal growers using Liquid Encapsulated Czochralski (LEC) method for compound semiconductor wafers. Operates in corrosive ambients with encapsulant vapors. 8414.90.41.55 classification for 8414.40 parts in statistical note semiconductor equipment.
Wafer Grinder Spindle Air Bearing Compressor Housing
Precision housing for hermetic compressors generating clean compressed air for air bearing spindles in wafer grinders, maintaining sub-micron runout for boule diameter control. Essential for semiconductor wafer flat preparation. Under 8414.90.41.55 for crystal grinder compressors.
Diamond Wire Wafer Saw Coolant Recovery Compressor Scroll
Scroll element for oil-free hermetic compressors in coolant recovery systems of diamond wire wafer saws, recycling slurry while maintaining wafer surface quality. Handles abrasive particle-laden fluids. 8414.90.41.55 for 8414.40 semiconductor slicing compressors.
CMP Wafer Polisher Slurry Feed Compressor Diaphragm
Corrosion-resistant diaphragm for hermetic compressors delivering polishing slurry to chemical mechanical planarization (CMP) pads on wafer polishers. Ensures contamination-free delivery at precise pressures. Classified under 8414.90.41.55 for semiconductor wafer finishing compressors.
Czochralski Crystal Puller Compressor Valve
This precision compressor valve is a critical part of the gas delivery system in Czochralski crystal pullers used for growing monocrystalline silicon boules in semiconductor manufacturing. It regulates high-purity argon or nitrogen flow under vacuum conditions to prevent contamination during crystal growth. Classified under 8414.90.41.55 as a part of hermetic compressors in subheading 8414.40 for semiconductor wafer production equipment.
Wafer Slicing Saw Coolant Compressor Piston
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.
Wafer Lapping Machine Slurry Compressor Head
Compressor head assembly for hermetic units that pressurize abrasive slurry in wafer lapping machines, achieving sub-micron flatness for semiconductor wafer surfaces before polishing. Critical for dimensional tolerance in wafer fabrication prep. Classified 8414.90.41.55 for 8414.40 compressor parts in semiconductor processing.