Aerospace-Grade Cyanate Ester Resin from United States
Aerospace-grade cyanate ester resin, a hydrocarbon novolac cyanate ester thermosetting polymer in primary form, used for RTM processing in aircraft radomes. It is classified under tariff item 3911.90.00 as a product specified in Note 3 to Chapter 39, not elsewhere specified or included.
Duty Rate — United States → Canada
0%
Import Tips
• Verify the resin is in primary forms (granules, powder) as per Chapter 39 Note 6
• Document the cyanate ester composition and aerospace grade to support classification
• Ensure the resin is not an article of Section XVI, which is excluded under Chapter 39 Note 2(s)