7020.00.40.00/Borosilicate Glass Inner for Thermos Vacuum Flask/Mexico

Borosilicate Glass Inner for Thermos Vacuum Flask from Mexico

This is the inner glass liner made from borosilicate glass designed specifically for use inside thermos vacuum flasks to hold hot or cold liquids. It fits precisely within the outer stainless steel shell, creating the vacuum insulation layer essential for thermal retention. Classified under HTS 7020.00.4000 as a glass inner component for vacuum vessels, not the complete assembled flask.

Duty Rate — Mexico → United States

16.6%

Rate breakdown

9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
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Import Tips

• Verify the glass is specifically shaped as an inner liner for vacuum insulation to avoid misclassification as general glassware under 7010

• Provide detailed technical specs and diagrams showing vacuum flask compatibility during customs declaration to support HTS 7020.00.4000 classification

• Ensure packaging protects fragile glass from breakage; common pitfall is insufficient cushioning leading to high damage rates in transit

Borosilicate Glass Inner for Thermos Vacuum Flask from Mexico — Import Duty Rate | HTS 7020.00.40.00