Butyl Rubber Caulking Compound from Mexico
Synthetic rubber-based caulk for roofing and siding applications, providing excellent weatherproofing and low permeability. Falls under HTS 3214.10.00.10 as a caulking mastic, not a pure rubber product due to its compounded mastic form. Used in industrial and residential sealing.
Duty Rate — Mexico → United States
13.7%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Ensure labeling distinguishes from pure rubber sheets (Chapter 40) by noting mastic additives
• Include flash point data for hazardous material declarations if flammable solvents present