Halo-Butyl Rubber Granules
Granular form of chloroisobutene-isoprene rubber (CIIR) in bulk primary packaging, suitable for extrusion into tire inner liners. These granules are uncompounded and fall under tariff item 4002.39.00 as 'other' halo-isobutene-isoprene rubber in primary form.
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 granules are non-halogenated IIR
Non-halogenated IIR granules are classified under a different subheading.
If the granules contain fillers or reinforcing agents
Such additives would exclude the product from heading 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 granules are not further worked beyond bulk form, per Chapter 40 Note 3
• Declare the product as 'CIIR granules' and include the intended use (e.g
• tire inner liners) for clarity
• Keep the supplier's certificate of analysis to confirm no compounding
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.
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.