Isoprene rubber (IR)
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. > Acrylonitrile-butadiene rubber (NBR): > Isoprene rubber (IR) > Isoprene rubber (IR)
Duty Rate (from China)
Subheadings
Products classified under Tariff item 4002.60.00
Cis-1,4 Polyisoprene Rubber Bale
Cis-1,4 polyisoprene rubber in bale form is a synthetic isoprene rubber (IR) that closely mimics natural rubber, making it ideal for tire treads and conveyor belts. As a bale of irregular shape, it qualifies as a primary form under chapter note 3, and it is uncompounded, retaining its raw rubber character.
High Ammonia IR Latex
High ammonia IR latex is a stabilized synthetic isoprene rubber in liquid dispersion form, used for carpet backing and textile applications. As a latex, it is a primary form under chapter note 3, and the ammonia acts as a permitted stabilizer under chapter note 5(B)(iii), preserving its raw rubber character.
IR Synthetic Rubber Powder
IR synthetic rubber powder is a fine powder form of isoprene rubber used in compounding for seals and gaskets. Powder is explicitly listed as a primary form under chapter note 3, and the product is uncompounded, making it classifiable under tariff item 4002.60.00.
Isoprene Rubber (IR) Crumb
Isoprene rubber crumb is a bulk primary form of synthetic IR, typically used for recycling into new compounds. Chapter note 3 explicitly includes 'crumbs' as a primary form, and the product is uncompounded, so it falls under tariff item 4002.60.00.
Isoprene Rubber (IR) Granules
Isoprene rubber granules are a granular primary form of synthetic IR, supplied for easy handling in tire and rubber goods manufacturing. Granules are listed as a primary form in chapter note 3, and the product retains its raw material character without additives.
Low Molecular Weight IR Solution
Low molecular weight IR solution is a depolymerized isoprene rubber dissolved in an organic solvent, used for specialty coatings. Chapter note 4(c) includes depolymerized natural rubber in the definition of synthetic rubber, and the solution is a primary liquid form under chapter note 3.
Prevulcanized Isoprene Rubber Latex
Prevulcanized isoprene rubber latex is a special liquid form of synthetic IR where vulcanization occurs during processing, used for foam rubber and medical gloves. Chapter note 5(A) allows prevulcanized latex as a primary form, and it is classifiable under tariff item 4002.60.00.
Synthetic IR Rubber Blocks
Synthetic IR rubber blocks of irregular shape are a primary form of isoprene rubber for industrial compounding. Chapter note 3 explicitly lists 'blocks of irregular shape' as a primary form, and the product is uncompounded, so it falls under tariff item 4002.60.00.
Synthetic Isoprene Rubber Latex
Synthetic isoprene rubber latex is a liquid dispersion of IR used in adhesives, coatings, and dipped goods like gloves. As a latex, it is a primary form under chapter note 3, and it meets the vulcanization and elongation requirements of chapter note 4(a), making it classifiable under tariff item 4002.60.00.