Cryogenic Vacuum Pump Stator Housing from Japan
The stator housing encases the cold head in cryogenic vacuum pumps for ultra-high vacuum in semiconductor thin-film deposition processes. Classified under HTS 8414.90.91.40 as a part of vacuum pumps integral to processing semiconductor wafers. It maintains structural integrity under extreme low temperatures during gas cryopumping.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide material composition certificates (e.g
• stainless steel grades) to prove suitability for cryogenic vacuum service
• Label shipments with 'For Semiconductor Processing Vacuum Pumps Only' to support classification and avoid general parts duties