Hypalon Chlorinated Rubber (CSM-20) from Mexico
Chlorosulfonated polyethylene (Hypalon CSM-20), a chlorinated synthetic rubber with >95% polyethylene-derived chlorinated units. Excels in chemical-resistant hoses and cables. Primary form classification under 3911.90.70.00.
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
• Certify chlorosulfonation doesn't exceed 'chemically modified' per note (a)(3) for 'Other'
• Avoid bulk packaging confusion with 3923 retail packs
• Test for exact chlorine/sulfur content to prevent 3901.10 misclass