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.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the blocks are cut into plates, sheets, or strip
Cut-to-shape rubber products fall under heading 40.08.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Verify the blocks are irregular in shape, not cut to a specific form
• Ensure no additives like fillers or plasticizers are present
• Document the block dimensions and weight for CBSA classification
Related Products 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.