Nitrile Rubber O-Ring Gasket
A circular O-ring gasket made from nitrile butadiene rubber (NBR), a polymer of headings 3901-3914, used for sealing hydraulic systems in automotive engines. It falls under HTS 3926.90.45.90 as an other gasket not specified elsewhere in the gaskets subheading. These seals prevent fluid leakage under pressure.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If vulcanized rubber without polymer backing
Pure vulcanized rubber gaskets classify in Chapter 40, not plastics chapter.
If imported as part of a machinery gasket set
Gaskets designed for specific machines may fall under Chapter 84 as parts thereof.
If not a gasket, washer, or seal
Articles of plastics not fitting gasket definition go to the residual 'Other' subheading.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Verify polymer composition meets 95% monomer content per subheading notes for accurate classification
• Include material test certificates to confirm NBR content and avoid misclassification as rubber under Chapter 40
• Check for attached fittings, as they may qualify for duty-free under heading 3917 if applicable
Related Products under HTS 3926.90.45.90
PTFE Washer Seal
A flat washer seal crafted from polytetrafluoroethylene (PTFE), a fluoropolymer of heading 3904, for chemical processing equipment flanges. Classified in 3926.90.45.90 as an other plastic washer for sealing. Its chemical resistance makes it ideal for corrosive environments.
EPDM Door Gasket Profile
Extruded EPDM rubber gasket profile for refrigerator doors, composed of ethylene-propylene-diene monomer polymer from headings 3901-3914. It fits HTS 3926.90.45.90 as an other seal for household appliances. Provides airtight sealing against moisture.
Polyurethane Hydraulic Seal
Machined polyurethane U-cup seal for hydraulic cylinders in construction machinery, derived from polymers of heading 3909. Classified under 3926.90.45.90 as an other plastic seal. Offers high abrasion resistance under high pressure.
Silicone Valve Stem Seal
High-temperature silicone rubber seal for engine valve stems, polymer from heading 3910. Falls in 3926.90.45.90 as other plastic/rubber seal. Prevents oil leakage in combustion engines.
Fluoroelastomer Backup Washer
Viton fluoroelastomer washer backing primary seals in oilfield pumps, from heading 3904 copolymers. HTS 3926.90.45.90 for other seals. Resists extreme chemicals and temperatures.
Nylon Pipe Flange Gasket
Glass-filled nylon 6,6 gasket for plastic pipe flanges in plumbing systems, polyamide of heading 3908. Other gaskets under 3926.90.45.90. Provides mechanical strength and sealing.