Butyl Rubber Glaziers' Putty from Mexico
A non-hardening putty formulated with butyl rubber for bedding glass in window frames. Classified under HTS 3214.90.10.00 as glaziers' putty based on rubber, it provides long-term sealing against air and moisture. Ideal for traditional glazing applications in construction.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Label products clearly as 'glaziers' putty' to distinguish from general caulks during customs review
• Provide manufacturer specs confirming rubber base to avoid reclassification to bituminous mastics (excluded by Chapter notes)
• Check state regulations for VOC limits; non-compliant imports may face detention