Chapter 4005 — Customs Tariff Headings

ACM Acrylic Rubber Silica Compound

Acrylic rubber (ACM) compound with silica in granular primary form, unvulcanized. The silica acts as a reinforcing filler, and the product is intended for further processing into automotive belts. It falls under this tariff item because it is compounded rubber with silica in a primary form.

CR Neoprene Carbon Black Granules

Chloroprene rubber (CR, Neoprene) granules compounded with carbon black, unvulcanized and in crumb primary form. The carbon black is added as a reinforcing agent, and the product is used in adhesive applications. It is classified here as compounded rubber with carbon black in a primary form.

CSM Hypalon Carbon Black Sheets

Chlorosulfonated polyethylene (CSM, Hypalon) sheets compounded with carbon black, unvulcanized and cut to rectangular shapes. The carbon black provides UV resistance and reinforcement for roofing applications. It falls under this tariff item as compounded rubber with carbon black in sheet form.

EPDM Silica Compounded Sheets

Ethylene propylene diene monomer (EPDM) rubber sheets compounded with silica, cut to rectangular shapes and unvulcanized. The silica improves tear strength and weatherability for weatherstrip applications. It is classified here as compounded rubber with silica in sheet form.

FKM Fluoroelastomer Carbon Black Powder

Fluoroelastomer (FKM, Viton) powder compounded with carbon black, unvulcanized and in powder primary form. The carbon black is added for reinforcement in O-ring molding applications. It falls under this tariff item as compounded rubber with carbon black in a primary form.

IIR Butyl Rubber Silica Bale

Isobutylene-isoprene rubber (IIR, butyl) bales compounded with silica, unvulcanized and in bulk primary form. The silica enhances impermeability for inner tube production. It is classified here as compounded rubber with silica in a primary form.

Natural Rubber Carbon Black Bale Compound

Smoked sheet natural rubber bales compounded with carbon black, unvulcanized and in bulk primary form. The carbon black is added for reinforcement in general molding applications. It falls under this tariff item as compounded rubber with carbon black in a primary form.

NBR Rubber Compound with Carbon Black

Nitrile butadiene rubber (NBR) compound mixed with carbon black for enhanced strength and abrasion resistance, supplied in primary forms like bales or granules. The product is unvulcanized and intended for further processing. It is classified here as compounded rubber with carbon black in a primary form.

SBR Carbon Black Masterbatch Granules

Styrene-butadiene rubber (SBR) masterbatch granules compounded with high levels of carbon black for tire manufacturing, in bulk granular primary form. The product is unvulcanized and the carbon black serves as a reinforcing filler. It falls under this tariff item as compounded rubber with carbon black in a primary form.

Silicone Rubber Silica Compound Paste

High-consistency silicone rubber paste compounded with silica fillers for extrusion, in primary paste form. The product is unvulcanized and the silica provides reinforcement. It is classified here as compounded rubber with silica in a primary form.

ACM Rubber Dispersion for Automotive Seals

Acrylic rubber (ACM) dispersion in a liquid or paste form, compounded with additives such as stabilizers and vulcanizing agents, intended for use in high-temperature automotive seals. As an unvulcanized compounded rubber in a primary form, it falls under tariff item 4005.20.00, which covers solutions and dispersions of compounded rubber other than those of subheading 4005.10.

Butyl Rubber Solution for Sealant Manufacturing

Halogenated butyl rubber solution, compounded with additives like stabilizers and anti-tack agents, in an unvulcanized primary form for use in sealant and inner tube manufacturing. This solution falls under tariff item 4005.20.00, which covers solutions and dispersions of compounded rubber other than latex of subheading 4005.10.

CR Rubber Dispersion for Conveyor Belting

Chloroprene (CR/neoprene) rubber dispersion, compounded with stabilizers and other additives, in an unvulcanized primary form for impregnating conveyor belting. This dispersion is classified under tariff item 4005.20.00, which covers solutions and dispersions of compounded rubber other than those of subheading 4005.10.

CSM Rubber Solution for Corrosion Protection

Chlorosulfonated polyethylene (CSM/Hypalon) solution, compounded with additives such as stabilizers and curing agents, in an unvulcanized primary form for corrosion-resistant coatings. This solution falls under tariff item 4005.20.00, which covers solutions and dispersions of compounded rubber other than those of subheading 4005.10.

EPDM Rubber Dispersion for Tire Coating

EPDM rubber dispersion, compounded with stabilizers and other additives, in an unvulcanized primary form for protective tire coatings. This dispersion is classified under tariff item 4005.20.00, which covers solutions and dispersions of compounded rubber other than those of subheading 4005.10.

Hypalon Rubber Dispersion for Wire Insulation

Chlorosulfonated polyethylene (Hypalon) rubber dispersion, compounded with additives, in an unvulcanized primary form for wire insulation coating. This dispersion falls under tariff item 4005.20.00, which covers solutions and dispersions of compounded rubber other than those of subheading 4005.10, and is not excluded as an electrical appliance of Section XVI.

IIR Rubber Solution for Butyl Tubes

Isobutylene-isoprene rubber (IIR) solution, compounded with stabilizers and other additives, in an unvulcanized primary form for inner tube manufacturing. This solution falls under tariff item 4005.20.00, which covers solutions and dispersions of compounded rubber other than those of subheading 4005.10.

IR/NR Blend Rubber Solution

Isoprene rubber (IR) and natural rubber (NR) blend solution, compounded with additives, in an unvulcanized primary form for tire compounds. This solution falls under tariff item 4005.20.00, which covers solutions and dispersions of compounded rubber other than those of subheading 4005.10.

NBR/PVC Blend Dispersion for Hoses

Nitrile-butadiene rubber (NBR) blended with PVC dispersion, compounded with additives, in an unvulcanized primary form for flexible hose production. This dispersion falls under tariff item 4005.20.00, which covers solutions and dispersions of compounded rubber other than those of subheading 4005.10.

Neoprene Rubber Solution for Adhesive Coating

Polychloroprene (neoprene) rubber solution in organic solvent, compounded with stabilizers, in an unvulcanized primary form for adhesive coating applications. This solution falls under tariff item 4005.20.00, which covers solutions and dispersions of compounded rubber other than those of subheading 4005.10.

Nitrile Rubber Dispersion for Glove Dipping

Nitrile butadiene rubber (NBR) dispersion, compounded with additives, in an unvulcanized primary form for glove dipping processes. This dispersion falls under tariff item 4005.20.00, which covers solutions and dispersions of compounded rubber other than those of subheading 4005.10.

Polybutadiene Rubber Dispersion for Foam Production

High-cis polybutadiene rubber dispersion, compounded with additives, in an unvulcanized primary form for synthetic foam rubber production. This dispersion falls under tariff item 4005.20.00, which covers solutions and dispersions of compounded rubber other than those of subheading 4005.10.

SBR Latex Dispersion for Carpet Backing

Styrene-butadiene rubber (SBR) dispersion, compounded with additives, in an unvulcanized primary form for impregnating carpet backings. This dispersion falls under tariff item 4005.20.00, which covers solutions and dispersions of compounded rubber other than those of subheading 4005.10.

Silicone Rubber Solution for Mold Release

Liquid silicone rubber solution (polysiloxane-based), compounded with additives, in an unvulcanized primary form for mold release agents. This solution falls under tariff item 4005.20.00, which covers solutions and dispersions of compounded rubber other than those of subheading 4005.10.

Viton Fluoroelastomer Dispersion

Viton (FKM) fluoroelastomer aqueous dispersion, compounded with additives, in an unvulcanized primary form for high-performance seals. This dispersion falls under tariff item 4005.20.00, which covers solutions and dispersions of compounded rubber other than those of subheading 4005.10.

Unvulcanized Acrylic Rubber Sheets

Unvulcanized acrylic rubber (ACM) sheets, compounded with additives such as curing agents and fillers, are supplied in rectangular sheets for subsequent molding into automotive seals and gaskets. They are not yet vulcanized and retain the essential character of raw compounded rubber, falling under this tariff item for plates, sheets, and strip.

Unvulcanized Bromobutyl Rubber Strips

Unvulcanized bromobutyl rubber strips, compounded with halobutyl rubber and additives, are supplied in rectangular strips for cutting into pharmaceutical stoppers. They are not vulcanized and are in the form of strip, meeting the criteria for this tariff item.

Unvulcanized Butyl Rubber Plates

Unvulcanized butyl rubber plates, compounded with fillers and vulcanizing agents, are rectangular plates used for inner tube linings and roofing membranes. They are in primary form as plates, not yet vulcanized, and fall under this tariff item for compounded rubber plates.

Unvulcanized EPDM Rubber Sheets

Unvulcanized EPDM rubber sheets, compounded with carbon black, oils, and curing agents, are flat rectangular sheets for further processing into weatherstripping and roofing membranes. They are in primary form as sheets, unvulcanized, and fall under this tariff item.

Unvulcanized Fluoroelastomer Sheets

Unvulcanized fluoroelastomer (FKM) sheets, compounded with curing agents and fillers, are rectangular sheets used for high-performance seals and gaskets. They are not vulcanized and are in primary form as sheets, falling under this tariff item.

Unvulcanized Hypalon Rubber Plates

Unvulcanized chlorosulfonated polyethylene (CSM) rubber plates, compounded with curing agents and stabilizers, are rectangular plates for chemical-resistant linings. They are in primary form as plates, unvulcanized, and fall under this tariff item.

Unvulcanized IR Rubber Plates

Unvulcanized isoprene rubber (IR) plates, compounded with fillers and vulcanizing agents, are rectangular plates used in tire compounds. They are in primary form as plates, unvulcanized, and fall under this tariff item for compounded rubber.

Unvulcanized Natural Rubber Sheets

Unvulcanized compounded natural rubber sheets, mixed with sulfur, accelerators, and fillers, are rectangular sheets for balloon and glove molding. They are in primary form as sheets, unvulcanized, and fall under this tariff item.

Unvulcanized NBR/PVC Blend Sheets

Unvulcanized NBR/PVC blend sheets, compounded with plasticizers and curing agents, are rectangular sheets that retain rubber character. They are not vulcanized and are in primary form as sheets, falling under this tariff item for compounded rubber.

Unvulcanized Neoprene Rubber Strips

Unvulcanized neoprene (chloroprene) rubber strips, compounded with curing agents and fillers, are rectangular strips for wetsuit and hose production. They are in primary form as strips, unvulcanized, and fall under this tariff item.

Unvulcanized Nitrile Rubber Plates

Unvulcanized nitrile rubber (NBR) plates, compounded with carbon black and curing agents, are rectangular plates for gasket production in oil-resistant applications. They are in primary form as plates, unvulcanized, and fall under this tariff item.

Unvulcanized Polyurethane Rubber Strips

Unvulcanized polyurethane rubber strips, cast for use in wheels and rollers. These strips are compounded rubber in strip form, not yet vulcanized, and meet the synthetic rubber definition of Chapter 40. They are classified under tariff item 4005.91.00 as plates, sheets, or strip of compounded rubber.

Unvulcanized SBR Rubber Strips

Unvulcanized styrene-butadiene rubber (SBR) strips, compounded with carbon black and curing agents, are narrow rectangular strips for tire manufacturing or conveyor belting base. They are in primary form as strips, unvulcanized, and fall under this tariff item.

Unvulcanized Silicone Rubber Sheets

Unvulcanized silicone rubber sheets, compounded with silica fillers and curing agents, are rectangular sheets for molding into seals and gaskets. They are in primary form as sheets, unvulcanized, and fall under this tariff item.

Unvulcanized TPE Rubber Sheets

Unvulcanized thermoplastic elastomer (TPE) sheets, compounded and qualifying as vulcanizable rubber, are rectangular sheets for various applications. They are in primary form as sheets, unvulcanized, and fall under this tariff item if they meet the synthetic rubber definition.

ACM Acrylic Rubber Compound Strips

Strips of acrylic rubber (ACM) unvulcanized compound, rectangular in shape, used for automotive gaskets. The product is compounded with fillers and processing aids, placing it under tariff item 4005.99.00 as 'other' compounded rubber in strip form.

AEM Ethylene Acrylic Elastomer Mix

A mix of AEM (ethylene acrylic) elastomer in unvulcanized compound form, intended for belt manufacturing. The product is compounded with stabilizers and processing aids, qualifying as 'other' compounded rubber under tariff item 4005.99.00.

Butyl Rubber Unvulcanized Powder

Powdered butyl rubber compound, unvulcanized, with antioxidants added for inner tube production. The powder form is a primary form per chapter note 3, and the antioxidants are permitted additives under chapter note 5(B), so it falls under tariff item 4005.99.00 as 'other' compounded rubber.

CR Neoprene Rubber Paste

Paste of chloroprene rubber (neoprene) unvulcanized, compounded for use in adhesives. The paste is a primary form per chapter note 3, and the compounding additives qualify it for tariff item 4005.99.00 as 'other' compounded rubber.

CSM Chlorosulfonated PE Compound

Bulk compound of chlorosulfonated polyethylene (CSM) rubber, unvulcanized, in irregular block form. The product is compounded with fillers and stabilizers, placing it under tariff item 4005.99.00 as 'other' compounded rubber in primary bulk form.

EPDM Unvulcanized Rubber Granules

Granules of EPDM rubber, compounded unvulcanized with stabilizers and processing aids for weather-resistant products. The granular form is a primary form per chapter note 3, and the additives are permitted under note 5(B), so it falls under tariff item 4005.99.00 as 'other' compounded rubber.

FKM Fluoro Rubber Sheets

Sheets of FKM fluoroelastomer, unvulcanized compound, rectangular and uncut to shape. The sheets are compounded with fillers and processing aids, qualifying for tariff item 4005.99.00 as 'other' compounded rubber in sheet form.

Hypalon Rubber Compound Plates

Plates of chlorosulfonated polyethylene (Hypalon) rubber, unvulcanized compound, rectangular and uncut, for corrosion-resistant linings. The plates contain pigments and fillers, placing them under tariff item 4005.99.00 as 'other' compounded rubber in plate form.

IIR Halobutyl Rubber Granules

Granules of halobutyl rubber, compounded unvulcanized for tire manufacturing. The granular form is a primary form per chapter note 3, and the compounding additives qualify it for tariff item 4005.99.00 as 'other' compounded rubber.

NBR Unvulcanized Rubber Compound Sheets

Sheets of nitrile butadiene rubber (NBR) compound, unvulcanized, mixed with fillers and plasticizers for oil-resistant applications. The sheets are rectangular and uncut, placing them under tariff item 4005.99.00 as 'other' compounded rubber in sheet form.

Neoprene Unvulcanized Rubber Crumb

Crumb form of polychloroprene (neoprene) rubber, unvulcanized, compounded with reinforcing agents for chemical resistance. The crumb is a primary bulk form per chapter note 3, and the reinforcing agents qualify it for tariff item 4005.99.00 as 'other' compounded rubber.

NR SBR Blend Unvulcanized Lumps

Lumps of a natural rubber (NR) and SBR blend, compounded unvulcanized for general molding. The lumps are a primary bulk form per chapter note 3, and the compounding additives qualify it for tariff item 4005.99.00 as 'other' compounded rubber.

SBR Unvulcanized Rubber Bale Compound

Bales of styrene-butadiene rubber (SBR) compound, unvulcanized, containing carbon black reinforcement and oils for tire manufacturing. The bales are a primary bulk form per chapter note 3, and the compounding additives qualify it for tariff item 4005.99.00 as 'other' compounded rubber.

Silicone Rubber Unvulcanized Paste

Paste form of liquid silicone rubber (LSR), compounded unvulcanized with catalysts and fillers for molding applications. The paste is a primary form per chapter note 3, and the compounding additives qualify it for tariff item 4005.99.00 as 'other' compounded rubber.