Unvulcanized Rubber O-Ring Blanks
Pre-cut toroidal blanks from unvulcanized rubber, for molding into O-rings, are classified here as other articles (rings) of unvulcanized rubber. They are not primary forms because they are shaped articles. This tariff item covers such blanks before vulcanization into finished O-rings.
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 |
PGA flags
No agency flag on this HTS number in the CBSA Single Window matching criteria.
CBSA Single Window matching criteria, unknown
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the blanks are already vulcanized into finished O-rings
Vulcanized rubber O-rings are classified as gaskets or seals in heading 4016.
If the blanks are of vulcanized rubber
Articles of vulcanized rubber other than hard rubber fall under heading 4008.
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
• Ensure the blanks are clearly toroidal and not simply strips
• Keep documentation showing they are unvulcanized and intended for molding
• If the O-rings are for mechanical appliances, note that hard rubber parts fall in Section XVI
Related Products under Tariff item 4006.90.00
Unvulcanized Butyl Rubber Sheets for Tire Liners
Calendered unvulcanized butyl rubber sheets for inner tire liners, cut to tire specifications. These are articles of unvulcanized synthetic rubber, not qualifying as simple sheets under chapter note 9, and are classified under tariff item 4006.90.00.
Unvulcanized EPDM Rubber Strips for Roofing
Cut-to-width strips of unvulcanized EPDM rubber for membrane roofing production. These are articles of unvulcanized synthetic rubber, not qualifying as simple strip under chapter note 9, and are classified under tariff item 4006.90.00.
Unvulcanized Natural Rubber Discs
Circular discs of unvulcanized natural rubber, used as preforms for gaskets. These are articles of unvulcanized rubber, not qualifying as plates, sheets, or strip under chapter note 9, and are therefore classified under tariff item 4006.90.00.
Unvulcanized Natural Rubber Hose Sections
Pre-formed tubular hose sections of unvulcanized natural rubber, used for industrial hose production. These are tubes of unvulcanized rubber, not in primary forms, and are classified under tariff item 4006.90.00.
Unvulcanized Natural Rubber O-Ring Blanks
Ring-shaped blanks of unvulcanized natural rubber for molding into seals. These are articles (rings) of unvulcanized rubber, classified under tariff item 4006.90.00.
Unvulcanized Natural Rubber Profile Strips
Profile-shaped strips of unvulcanized natural rubber, such as U-channels or T-sections, for molding into seals. These are profile shapes of unvulcanized rubber, classified under tariff item 4006.90.00.