7020.00.40.00/Borosilicate Glass Inner for Thermos Vacuum Flask/China

Borosilicate Glass Inner for Thermos Vacuum Flask from China

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 — China → United States

44.1%

Rate breakdown

9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 to this subchapter

9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)

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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