Low-Expansion Glass Tubes for Vacuum Systems from Mexico
Unworked glass tubes of low thermal expansion borosilicate for high-vacuum applications like vacuum manifolds and seals in scientific equipment. These tubes meet the tariff item's requirement of a linear coefficient of expansion not exceeding 5 x 10⁻⁶/K. They are imported in raw tube form without any working.
Duty Rate — Mexico → Canada
0%
Import Tips
• Ensure the tubes are unworked and not cut to length, as cutting may reclassify them
• Provide documentation of the expansion coefficient from the manufacturer
• If the tubes are for scientific equipment, consider if they qualify for any duty relief programs