Liquid NBR Paste
High-solids paste form of NBR for adhesive and sealant formulations, maintaining primary liquid form without cross-linking. Classified HTS 4002.59.00.00 as primary form paste under Chapter Note 3(a).
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If prevulcanized for stability
Prevulcanized forms have separate provisions despite being primary.
If adhesive-ready with thickeners
Essential character becomes adhesive rather than raw rubber.
If chemical dispersion with non-rubber polymers
Mixtures lose rubber identity per Chapter Note 5(b).
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
• Provide viscosity and solids content certificates to confirm primary form
• Ensure container labeling specifies 'unvulcanized primary rubber'
Related Products under HTS 4002.59.00.00
NBR Powder Granules
Granular form of acrylonitrile-butadiene rubber (NBR) produced by spray drying latex, used in compounding for seals and gaskets. Falls under HTS 4002.59.00.00 as synthetic rubber in primary bulk form (granules), per Chapter Note 3(c).
NBR Solution (Non-Solvent)
Water-based solution of NBR polymers for textile coating, free of organic solvents or prohibited additives. Primary form classification under HTS 4002.59.00.00 per liquid definition.
NBR Block (Irregular)
Irregular blocks of NBR from latex coagulation, primary bulk form for further processing. Covered by HTS 4002.59.00.00 per Chapter Note 3(b) lumps/blocks.
Carboxylated NBR Latex
Latex of carboxylated acrylonitrile-butadiene rubber for improved adhesion in paper coatings. Still primary form synthetic rubber under HTS 4002.59.00.00.
Hydrogenated NBR Solution
Solution of hydrogenated NBR (HNBR) with improved heat resistance, primary liquid form. HTS 4002.59.00.00 as other synthetic rubber meeting vulcanization criteria.
NBR Oil-Resistant Granules
Granules of oil-resistant NBR formulation (high ACN), primary form for automotive seals. Classified HTS 4002.59.00.00 as uncompounded synthetic rubber.