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Low-Expansion Glass Tubes for Vacuum Systems from Canada

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 — Canada → United States

16%

Rate breakdown

9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada

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