Analysis
HTS 3902.20.50 covers polyisobutylene: other under heading 3902 (polymers of propylene or of other olefins, in primary forms).
Rates on the nearby lines range from duty-free to 6.5%. The costliest confusion would be with 3902.20.10 (polyisobutylene: elastomeric) at duty-free, a difference of 6.5 points on the customs value.
The general duty rate is 6.5% of the customs value, which is above most the rates in chapter 39 (86th percentile of 236 lines with an ad valorem rate). On a shipment valued at $10,000 that is $650 in duty before any Chapter 99 additions or preference claims.
Goods that qualify under GSP, the Australia FTA, the Bahrain FTA, the Chile FTA, the Colombia TPA, and 12 others can enter duty-free instead of paying 6.5%. It is also eligible under GSP, the developing-country programme, which Congress has to renew; check whether GSP is in force on the entry date.
The other lines in the same group are 3902.10.00 (polymers of propylene or of other olefins, in primary…, 6.5%), 3902.20.10 (polyisobutylene: elastomeric, duty-free), 3902.30.00 (propylene copolymers, 6.5%) and 3902.90.00 (polymers of propylene or of other olefins, in primary…, 6.5%).
Neighbouring lines
| Line | Description | General rate |
|---|---|---|
| 3902.10.00 | Polymers of propylene or of other olefins, in primary forms: polypropylene | 6.5% |
| 3902.20.10 | Polyisobutylene: elastomeric | Free |
| 3902.30.00 | Propylene copolymers | 6.5% |
| 3902.90.00 | Polymers of propylene or of other olefins, in primary forms: other | 6.5% |