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8442.40.00.00/Crystal Puller Vacuum Chamber Lid/Mexico

Crystal Puller Vacuum Chamber Lid from Mexico

Stainless steel lid with viewport and ports for Czochralski puller vacuum chambers, maintaining argon atmosphere during growth. Double O-ring seal design. Structural part of crystal growing equipment in 8442.40.00.00.

Duty Rate — Mexico → United States

10%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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Import Tips

• Helium leak test certification (<10^-9 atm cc/sec) required for vacuum integrity

• Port configurations (thermocouple, seed lift) must match puller specifications

• Include material certs (316L SS) for high-temperature vacuum service

Crystal Puller Vacuum Chamber Lid from Mexico — Import Duty Rate | HTS 8442.40.00.00