Other
Synthetic rubber and factice derived from oils, in primary forms or in plates, sheets or strip; mixtures of any product of heading 40.01 with any product of this heading, in primary forms or in plates, sheets or strip. > Isobutene-isoprene (butyl) rubber (IIR); halo-isobutene-isoprene rubber (CIIR or BIIR): > Isobutene-isoprene (butyl) rubber (IIR) > Other
Duty Rate (from China)
Products classified under Tariff item 4002.3
Bayer Butyl NC 229 Rubber Solution
> A solution of isobutene-isoprene (butyl) rubber (IIR) in an organic solvent, used for coating applications. It is in primary form (liquid) as defined in Chapter Note 3(a) and retains the essential character of raw synthetic rubber, with the solvent permitted under Chapter Note 5(B) as an additive that does not alter classification.
4002.31.00Butyl Rubber Dispersion for Dipping
> An aqueous dispersion of isobutene-isoprene (butyl) rubber (IIR) intended for latex dipping processes. As a liquid dispersion, it qualifies as a primary form under Chapter Note 3(a) and is not compounded beyond the permitted additives, retaining its raw synthetic rubber character for heading 40.02.
4002.31.00Butyl Rubber for Pharmaceutical Stoppers
> Pure isobutene-isoprene (butyl) rubber (IIR) in bale form, optimized for pharmaceutical vial stoppers. It is in primary bulk form (bales) under Chapter Note 3(b) and is not compounded, retaining the essential character of raw synthetic rubber, making it classifiable under tariff item 4002.31.00.
4002.31.00Butyl Rubber Latex Dispersion
> A liquid dispersion of isobutene-isoprene (butyl) rubber (IIR) in water, used for dipping and coating applications in manufacturing gloves and balloons. It is a primary form (latex) under Chapter Note 3(a) and meets the definition of synthetic rubber in Chapter Note 4, not being compounded with prohibited substances.
4002.31.00Butyl Rubber Powder for Tire Liners
> Fine powder form of isobutene-isoprene (butyl) rubber (IIR) used in tire inner liner compounds, supplied in bulk bags. Powder is a primary form under Chapter Note 3(b), and the product is uncompounded, meeting the synthetic rubber definition in Chapter Note 4.
4002.31.00Butyl VM-613 Granules
> VM-613 grade butyl rubber granules from Lion Elastomers for vibration mounts. Granules are a primary form under Chapter Note 3(b), and the product is uncompounded synthetic rubber (IIR), classifiable under tariff item 4002.31.00.
4002.31.00Exxon Butyl 268 Rubber Bale
> Baled isobutene-isoprene rubber (IIR), grade Butyl 268 from ExxonMobil, suitable for tire inner liners and pharmaceutical stoppers. Bales are a primary bulk form under Chapter Note 3(b), and the rubber is uncompounded, meeting the synthetic rubber definition in Chapter Note 4.
4002.31.00High Molecular Weight Butyl Rubber Crumbs
> Crumbs of high molecular weight isobutene-isoprene rubber for blending in conveyor belts. Crumbs are a primary form under Chapter Note 3(b), and the rubber is uncompounded, complying with the vulcanization and recovery tests in Chapter Note 4(a).
4002.31.00IIR Butyl Rubber Lumps for Seals
> Irregular lumps of unprocessed isobutene-isoprene (butyl) rubber for industrial seal production. Lumps are a primary bulk form under Chapter Note 3(b), and the rubber is unadulterated synthetic rubber, classifiable under tariff item 4002.31.00.
4002.31.00Isoprene-Isobutene Copolymer Bale
> Standard isobutene-isoprene copolymer rubber bales for general molding applications. Bales are a primary bulk form under Chapter Note 3(b), and the rubber is uncompounded, meeting the synthetic rubber definition in Chapter Note 4.
4002.31.00Lanxess Butyl 301 Rubber Granules
> Granular isobutene-isoprene (butyl) rubber grade 301 from Lanxess, in primary crumb form for easy processing into seals and gaskets. Granules are a primary form under Chapter Note 3(b), and the rubber is uncompounded, classifiable under tariff item 4002.31.00.
4002.31.00Liquid Butyl Rubber for Sealants
> Low-viscosity liquid isobutene-isoprene (butyl) rubber for sealant formulations, in drums. It is a primary form (liquid) under Chapter Note 3(a) and is uncompounded, retaining the essential character of raw synthetic rubber.
4002.31.00Polymerized Isobutylene Rubber Powder
> Powdered polymerized isobutylene-isoprene rubber for various applications. Powder is a primary form under Chapter Note 3(b), and the rubber is uncompounded, meeting the synthetic rubber definition in Chapter Note 4.
4002.31.00Prevulcanized Butyl Rubber Paste
> Paste form of prevulcanized isobutene-isoprene rubber (IIR) for adhesive applications. It is a primary form (paste) under Chapter Note 3(a), and the prevulcanization is permitted under Chapter Note 5(A)(i) as it is prepared for pre-vulcanized rubber latex, retaining classification under tariff item 4002.31.00.
4002.31.00Unvulcanized Butyl Rubber Blocks
> Irregular blocks of unvulcanized isobutene-isoprene (butyl) rubber for custom molding. Blocks are a primary bulk form under Chapter Note 3(b), and the rubber is uncompounded, classifiable under tariff item 4002.31.00.
4002.39.00BIIR Irregular Lumps
Irregular lumps of brominated isobutene-isoprene rubber (BIIR) obtained directly from polymerization. They are in primary forms as defined in Chapter Note 3(b) and are uncompounded, qualifying as 'other' synthetic rubber under tariff item 4002.39.00.
4002.39.00BIIR Rubber Bale
Brominated isobutene-isoprene rubber (BIIR) compressed into rectangular bales for storage and transport. These bales are primary forms under Chapter Note 3(b) and are uncompounded, falling under tariff item 4002.39.00 as 'other' synthetic rubber.
4002.39.00Butyl Rubber Latex Dispersion
A liquid dispersion of butyl rubber (IIR) in water, used for dipping and coating applications. This latex is a primary form under Chapter Note 3(a) and is uncompounded, qualifying for tariff item 4002.39.00 as 'other' synthetic rubber.
4002.39.00Butyl Rubber Solution Paste
A viscous paste solution of butyl rubber in an organic solvent, used for cement applications. This is a primary form under Chapter Note 3(a) as a solution, and it is uncompounded, falling under tariff item 4002.39.00 as 'other' synthetic rubber.
4002.39.00Butyl VM-6131 Masterbatch Pellets
Butyl VM-6131 masterbatch pellets containing minimal permitted stabilizers for pharmaceutical applications. These pellets are in primary forms under Chapter Note 3(b) and retain their raw material character, qualifying for tariff item 4002.39.00.
4002.39.00Chlorobutyl Rubber Scrap-Free Crumbs
Processed chlorobutyl rubber (CIIR) crumbs from calendaring, usable as a primary input without being waste. These crumbs are in bulk primary forms under Chapter Note 3(b) and are uncompounded, falling under tariff item 4002.39.00.
4002.39.00CIIR Bulk Powder
Bulk chlorobutyl rubber (CIIR) powder for dry blending. This powder is a primary form under Chapter Note 3(b) and is uncompounded, qualifying for tariff item 4002.39.00 as 'other' synthetic rubber.
4002.39.00CIIR Powder Form
Micronized chlorobutyl rubber powder for compounding in adhesives. This powder is a primary form under Chapter Note 3(b) and is uncompounded, falling under tariff item 4002.39.00 as 'other' synthetic rubber.
4002.39.00Exxon Butyl 268 Rubber Pellets
ExxonMobil Butyl 268 grade isobutene-isoprene rubber (IIR) in pellet form for injection molding compounds. These pellets are primary forms under Chapter Note 3(b) and are free of disallowed additives, qualifying for tariff item 4002.39.00.
4002.39.00Halo-Butyl Dispersion Liquid
Liquid halo-butyl dispersion for coatings. This is a primary form under Chapter Note 3(a) as a dispersion, and it is uncompounded, falling under tariff item 4002.39.00 as 'other' synthetic rubber.
4002.39.00Halo-Butyl Rubber Granules
Granular chloroisobutene-isoprene rubber (CIIR) in bulk primary packaging, suitable for extrusion into tire inner liners. These granules are primary forms under Chapter Note 3(b) and are uncompounded, qualifying for tariff item 4002.39.00.
4002.39.00IIR Rubber Lump Blocks
Irregular lump blocks of isobutene-isoprene rubber for further processing into sheets. These are primary forms under Chapter Note 3(b) and are uncompounded, falling under tariff item 4002.39.00 as 'other' synthetic rubber.
4002.39.00Isobutylene-Isoprene Rubber Paste
High-viscosity isobutene-isoprene rubber (IIR) paste for sealants. This paste is a primary form under Chapter Note 3(a) and is uncompounded, qualifying for tariff item 4002.39.00 as 'other' synthetic rubber.
4002.39.00Lanxess Bromobutyl BB2030
Lanxess BB2030 bromobutyl rubber in crumb form for tire curing bladders. These crumbs are primary forms under Chapter Note 3(b) and are uncompounded, falling under tariff item 4002.39.00 as 'other' synthetic rubber.
4002.39.00Polymerized Butyl Rubber Sheets
Thin, uncut rectangular sheets of plain butyl rubber from coagulation. These sheets are primary forms under Chapter Note 3(b) and are simply cut to rectangular shape, qualifying for tariff item 4002.39.00.