Butyl Rubber Glazing Sealant from Mexico
Butyl rubber glazing sealant is a non-hardening mastic tape or compound for insulating glass units. Its dead-soft properties seal edges permanently under HTS 3214.10.00.
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
• Provide rubber content analysis to confirm mastic vs polymer classification
• Include compatibility certificates for PVC and aluminum spacers
• Declare tape vs compound form explicitly in entry documents