Chlorobutyl Rubber Scrap-Free Crumbs
Processed chlorobutyl rubber (CIIR) crumbs from calendaring, usable as a primary input without waste status. These crumbs are in bulk form and uncompounded, falling under tariff item 4002.39.00 as 'other' halo-isobutene-isoprene rubber.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the crumbs are non-halogenated IIR
Non-halogenated IIR crumbs fall under a different subheading.
If the crumbs are waste, parings, or scrap
Waste rubber is classified under heading 40.04, not 40.02.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Ensure the crumbs are not classified as waste under Chapter 40 Note 6; they must be definitely usable as a raw material
• Provide evidence of the manufacturing process to show they are not scrap
• Declare the product as 'CIIR crumbs' and specify the halogenation type
Related Products under Tariff item 4002.39.00
BIIR Irregular Lumps
Irregular lumps of brominated isobutene-isoprene rubber (BIIR) in primary form, produced directly from polymerization. These lumps are uncompounded and retain the essential character of raw synthetic rubber, falling under tariff item 4002.39.00 as 'other' halo-isobutene-isoprene rubber.
BIIR Rubber Bale
Brominated isobutene-isoprene rubber (BIIR) compressed into rectangular bales for storage and transport, used in pharmaceutical stoppers. The bales are in primary form (blocks of regular geometric shape) and uncompounded, qualifying under tariff item 4002.39.00 as 'other' halo-isobutene-isoprene rubber.
Butyl Rubber Latex Dispersion
A liquid dispersion of butyl rubber (IIR) in water, used for dipping and coating applications in manufacturing gloves and balloons. As a latex in primary form, it is uncompounded and falls under tariff item 4002.39.00 as 'other' isobutene-isoprene rubber.
Butyl Rubber Solution Paste
Viscous paste solution of butyl rubber in organic solvent for cement applications, in primary form per Chapter 40 Note 3(a). The paste is uncompounded and classified under tariff item 4002.39.00 as 'other' synthetic rubber dispersion.
Butyl VM-6131 Masterbatch Pellets
Butyl VM-6131 masterbatch pellets with minimal permitted stabilizers for pharmaceutical applications. These pellets are in primary form and uncompounded, falling under tariff item 4002.39.00 as 'other' isobutene-isoprene rubber.
CIIR Bulk Powder
Bulk chloroisobutene-isoprene rubber (CIIR) powder for dry blending. This powder is in primary form and uncompounded, falling under tariff item 4002.39.00 as 'other' halo-isobutene-isoprene rubber.