Polyimide Cellular Foam Sheets from Canada
High-temperature resistant cellular polyimide foam sheets for aerospace thermal insulation. Classified HTS 3921.19.00 as other plastics cellular sheets. Maintains properties up to 300°C.
Duty Rate — Canada → United States
66.5%
Rate breakdown
9903.03.1450%Articles the product of Canada as provided in subdivision (b)(3) of U.S. note 51 to this subchapter
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Technical data verifying polyimide chemistry essential for proper 'other plastics' classification
• Industrial end-use documentation prevents consumer article misclassification
• Excludes fittings or composites that would shift headings