High Molecular Weight Ethylene-Butene Elastomer from Japan
An elastomeric copolymer with ethylene and 1-butene monomers, ethylene at >95% by weight, imported in primary powder or pellet form under 3901.90.10. Used in wire insulation compounding. Elastomeric designation per Chapter 39 notes distinguishes it from standard polyethylenes.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Certify high molecular weight via GPC test results for elastomeric proof
• Bulk shipments require homogeneous sampling to avoid disputes
• Common issue: reclassification if moisture content suggests processing