Marine-Grade Caulking Mastic from Mexico
UV-resistant mastic for sealing boat decks and hull joints, flexible in saltwater environments. Under HTS 3214.10.00.20 as caulking compound mastic. Nonrefractory formula for surfacing marine structures.
Duty Rate — Mexico → United States
13.7%
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
Import Tips
• Comply with USCG standards for marine chemicals if destined for vessels
• Declare mildew resistance additives separately to avoid chemical chapter shifts
• Package in tubes for retail to differentiate from bulk industrial compounds