Low-Expansion Glass Tubes for Vacuum Systems from Japan
Unworked glass tubes of low thermal expansion borosilicate for high-vacuum applications like vacuum manifolds and seals in scientific equipment. Falls under 7002.32.00.00 as unworked tubes meeting the precise expansion coefficient requirement.
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 technical specs documenting the 0-300°C expansion coefficient to prevent misclassification as ordinary glass
• Use wooden crates with dividers for transport; breakage claims common without proper packing declaration