Chapter 4002 — Customs Tariff Headings
Subheadings
Products classified under Tariff item 40.02
Carboxylated Styrene-Butadiene Latex (XSBR Latex)
Carboxylated styrene-butadiene rubber (XSBR) latex in primary liquid form, featuring carboxylic acid groups that enhance adhesion in water-based coatings and textiles. It falls under tariff item 4002.11.00 as it is explicitly included in the subheading's scope for SBR and XSBR latex.
4002.11.00Functionalized XSBR Latex for Gloves
Functionalized XSBR latex formulated for film-forming applications such as dipped gloves and balloons, in primary liquid form. It qualifies under tariff item 4002.11.00 as raw carboxylated SBR latex; finished articles like gloves would be classified elsewhere.
4002.11.00High Solids SBR Latex (50% Solids Content)
High-solids SBR latex with 50% rubber solids content, used in industrial coatings and adhesives, in liquid primary form. Concentration does not affect classification under tariff item 4002.11.00, as it remains a primary form per Chapter Note 3(a).
4002.11.00Hot Polymerized SBR Latex (Cold SBR Alternative)
Hot-polymerized SBR latex used in foam rubber production and tire cord dipping, characterized by a broader particle size distribution. It is a primary liquid form of synthetic rubber, qualifying under tariff item 4002.11.00.
4002.11.00Prevulcanized SBR Latex for Paper Coating
Prevulcanized SBR latex designed for paper coating, offering water resistance and printability. It is permitted under tariff item 4002.11.00 as a prevulcanized dispersion per Chapter Note 3(a), provided it retains its essential character as raw material.
4002.11.00Seed Latex SBR for Polymer Modification
Low-solids seed SBR latex used as a nucleating agent in custom polymerizations, in pure primary form. It qualifies under tariff item 4002.11.00 as a synthetic rubber dispersion with essential character per Chapter Note 5(B).
4002.11.00Styrene-Butadiene Latex (SBR Latex)
Styrene-butadiene latex (SBR latex) in water-based dispersion, used in adhesives, paper coatings, and carpet backings. It is a primary liquid form of synthetic rubber, falling under tariff item 4002.11.00.
4002.11.00XSBR Latex for Carpet Backing
Carboxylated XSBR latex specifically formulated for secondary carpet backing, providing superior adhesion to jute and polyester. It falls under tariff item 4002.11.00 as raw SBR latex in primary form, regardless of end-use application.
4002.19.00Andros SBS 5002 Granules
Andros SBS 5002 granules are radial solution-polymerized SBS thermoplastic elastomer granules with less than 50% styrene, used for sealants and coatings. They are primary form synthetic rubber granules, uncompounded and meeting the vulcanization and elasticity tests.
4002.19.00Asaphlex 30S SBS Powder
Asaphlex 30S is a fine SBS powder from solution polymerization with ≤50% styrene, designed for asphalt modification and sealants. It is a primary form synthetic rubber powder, uncompounded and meeting the Chapter 40 Note 4 criteria.
4002.19.00Calprene 411 SBS Powder
Calprene 411 is a solution-polymerized SBS thermoplastic elastomer in powder form, containing under 50% styrene, used in hot-melt adhesives. It is a primary form synthetic rubber powder, uncompounded and meeting the raw material criteria of Chapter 40.
4002.19.00Carboxylated Styrene-Butadiene Rubber (XSBR) Dispersion
A carboxylated styrene-butadiene rubber (XSBR) dispersion supplied as an aqueous paste, used for tire cord dipping and foam production. It retains the character of a raw synthetic rubber in primary form (liquid or paste) and is not compounded with prohibited substances, qualifying under tariff item 4002.19.00.
4002.19.00Cariflex SBS 35/70 Powder
Cariflex SBS 35/70 powder is a solution-polymerized SBS thermoplastic elastomer powder for compounding. It is a primary form synthetic rubber powder, uncompounded and meeting the vulcanization and elasticity requirements of Chapter 40 Note 4.
4002.19.00Cold Polymerized SBR Granules
Cold polymerized SBR granules with higher molecular weight, supplied in bulk granular form for tire manufacturing. These granules are a primary form of synthetic rubber, uncompounded and meeting the vulcanization and elasticity tests of Chapter 40 Note 4.
4002.19.00Dynasol Calprene 701 SBS Granules
Dynasol Calprene 701 SBS granules feature solution-polymerized SBS with balanced styrene (<50%), used in polymer modification and compounding. These granules are a primary form of synthetic rubber, uncompounded and meeting the Chapter 40 Note 4 criteria.
4002.19.00High Vinyl SBR Solution
High-vinyl SBR in an organic solvent solution, used for specialized sealants and modifiers. As a liquid primary form, it qualifies as synthetic rubber under Chapter 40 Note 4, provided it is vulcanizable and not compounded with prohibited substances.
4002.19.00SBR Bale Rubber (Oil Extended)
Oil-extended SBR bales containing mineral oil up to 50 phr, in rectangular block form for footwear soles. The mineral oil is permitted under Chapter 40 Note 5(A)(iii), and the bales retain the essential character of raw synthetic rubber in primary form.
4002.19.00SBR Block Copolymer Sheets
Thin SBR sheets in rectangular form from block copolymerization, used for rubber goods calendering. These sheets are simply cut to rectangular shape and not further worked, qualifying as primary forms under Chapter 40 Note 9, and are vulcanizable synthetic rubber.
4002.19.00SBR Crumb Rubber (Hot Polymerized)
Hot polymerized SBR crumbs in granular primary form, ideal for tire treads and conveyor belts. These crumbs are uncompounded synthetic rubber meeting the elasticity and vulcanization requirements of Chapter 40 Note 4, and are not further worked.
4002.19.00SBR Masterbatch Pellets
SBR masterbatch pellets pre-mixed with minimal stabilizers, in primary pellet form for extrusion. The stabilizers are permitted under Chapter 40 Note 5(B)(iv), and the pellets retain the raw material character of synthetic rubber, qualifying for this tariff item.
4002.19.00Styrene-Butadiene Rubber (SBR) Latex
SBR latex, a water-based dispersion of styrene-butadiene copolymer, used in adhesives, paper coatings, and carpet backings. It is a primary liquid form of synthetic rubber, uncompounded and meeting the vulcanization requirements, thus falling under this tariff item.
4002.19.00XSBR for Paper Coating Latex
Specialty XSBR latex formulated for paper and board coatings, providing water resistance. It is a primary dispersion of carboxylated synthetic rubber without disallowed pigments or fillers, meeting the raw material criteria of Chapter 40.
4002.19.00XSBR Powder for Adhesives
Spray-dried XSBR powder from latex, used in pressure-sensitive adhesives and textile coatings. This powder is a primary form of carboxylated synthetic rubber, uncompounded and retaining its raw material character, qualifying under this tariff item.
4002.20.00BR Oil-Extended Rubber Bale
Bales of butadiene rubber (BR) extended with mineral oil, a permitted extender under Chapter 40 Note 5(A)(iii). The oil extension improves processing while the product retains its essential character as raw synthetic rubber in primary form.
4002.20.00Butadiene Rubber Powder
Butadiene rubber (BR) in fine powder form, a primary form under Chapter 40 Note 3(b) as 'powders, granules, crumbs and similar bulk forms.' The powder is uncompounded and retains the essential character of raw synthetic rubber for use in rubber compounding and asphalt modification.
4002.20.00Cis-1,4-Polybutadiene Rubber Latex
Prevulcanized latex of cis-1,4-polybutadiene rubber, a liquid dispersion in primary form under Chapter 40 Note 3(a). The prevulcanization is permitted per Note 5(A)(i) as it is added for the preparation of pre-vulcanised rubber latex, and the product retains its essential character as raw synthetic rubber.
4002.20.00High Cis-Polybutadiene Rubber Bale
Baled high-cis polybutadiene rubber, an uncompounded synthetic rubber in primary bulk form. The high-cis microstructure provides excellent elasticity and abrasion resistance, making it suitable for conveyor belts and footwear soles. It meets the vulcanization and recovery tests of Chapter 40 Note 4 without prohibited additives.
4002.20.00Lithium-Catalyzed Butadiene Rubber Crumb
Crumb form of solution butadiene rubber produced via lithium catalysis, a primary form under Chapter 40 Note 3(b). The crumbs are uncompounded and retain the essential character of raw synthetic rubber for use in wire insulation compounds.
4002.20.00Neodymium-Catalyzed Polybutadiene Rubber
Baled neodymium-catalyzed polybutadiene rubber with high microstructure, an uncompounded synthetic rubber in primary form. The neodymium catalyst produces a rubber with excellent dynamic properties for golf balls and tires. It meets the requirements of Chapter 40 Note 4 without prohibited additives.
4002.20.00Polybutadiene Rubber (BR) Granules
Granular form of cis-1,4-polybutadiene rubber, a primary form under Chapter 40 Note 3(b) as 'granules.' The granules are uncompounded and retain the essential character of raw synthetic rubber for tire manufacturing and synthetic golf balls.
4002.20.00Solution Styrene Butadiene Rubber (SSBR)
Solution-polymerized styrene-butadiene rubber (SSBR) in crumb form, a synthetic rubber that is predominantly butadiene with a minor styrene content. The crumbs are uncompounded and retain the essential character of raw butadiene rubber for high-performance tires. It meets the vulcanization and recovery tests of Chapter 40 Note 4.
4002.20.00Styrene-Butadiene Rubber (SBR) Latex
Liquid dispersion of butadiene rubber copolymerized with styrene, used in adhesives and carpet backings. The product is predominantly butadiene rubber in primary latex form, meeting the vulcanization and recovery tests of Chapter 40 Note 4. It is uncompounded and retains the essential character of raw synthetic rubber.
4002.20.00Synthetic Isoprene-Butadiene Rubber (SIBR)
Granular form of isoprene-butadiene rubber (SIBR), a copolymer where butadiene is the predominant monomer. The granules are uncompounded and retain the essential character of raw butadiene rubber for tire treads. It meets the vulcanization and recovery tests of Chapter 40 Note 4.
4002.31.00Bayer 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.