Halo-Butyl Rubber Granules
Granular form of chloroisobutene-isoprene rubber (CIIR) in bulk primary packaging, suitable for extrusion into tire inner liners. Falls under HTS 4002.39.00.00 as 'other' halo-butyl rubber in primary granule form per Chapter Note 3(b).
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If formed into plates, sheets, or strips over 0.25mm thick
Chapter Note 7 shifts worked plates/sheets from primary forms in 4002 to heading 4008.
If manufacturing waste or irregular crumbs
Chapter Note 6 defines usable bulk forms as primary, but definite scrap moves to waste heading.
If specifically styrene-butadiene (SBR) latex mix instead of butyl
Different synthetic rubber type changes subheading within 4002 structure.
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Import Tips & Compliance
• Document granule production process to prove 'simply cut to rectangular shape' compliance for sheets/strip equivalence
• Label with exact IIR/CIIR composition; test for vulcanization properties if challenged by customs
Related Products under HTS 4002.39.00.00
Butyl Rubber Latex Dispersion
A liquid dispersion of butyl rubber (IIR) in water, used for dipping and coating applications in manufacturing gloves and balloons. Classified under HTS 4002.39.00.00 as synthetic rubber in primary form (latex), meeting Chapter 40 note definitions for prevulcanized latex without prohibited compounding agents.
CIIR Powder Form
Micronized chlorobutyl rubber powder for compounding in adhesives, classified as primary form powder under HTS 4002.39.00.00. Meets Chapter 40 definitions for uncompounded synthetic rubber granules/powders.
IIR Rubber Lump Blocks
Irregular lump blocks of isobutene-isoprene rubber for further processing into sheets, in primary bulk form. HTS 4002.39.00.00 as 'other' IIR, compliant with primary forms note excluding worked shapes.
Exxon Butyl 268 Rubber Pellets
Commercial ExxonMobil Butyl 268 grade IIR in pellet form for injection molding compounds. HTS 4002.39.00.00 for primary pellets of butyl rubber, free of disallowed additives.
Lanxess Bromobutyl BB2030
Lanxess BB2030 bromobutyl rubber in crumb form for tire curing bladders. Primary form under HTS 4002.39.00.00 as halo-isobutene-isoprene 'other'.
Chlorobutyl Rubber Scrap-Free Crumbs
Processed CIIR crumbs from calendaring, usable as primary input without waste status. HTS 4002.39.00.00 per note distinguishing bulk forms from scrap.