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.
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 |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the CSM rubber is not compounded with additives beyond permitted substances
Uncompounded synthetic rubber falls under heading 40.02.
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
• Confirm the blocks are irregular in shape, not cut to regular geometric shapes, to stay in primary forms
• Document the compounding ingredients for CBSA verification
• Avoid any vulcanizing agents in the compound to remain in heading 40.05
Related Products under Tariff item 4005.99.00
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.
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.