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Product Classification Guide

HS Code for BR rubber

4002.20 Rubber; synthetic, butadiene rubber (BR), in primary forms or in plates, sheets or strip
Automotive & Vehicles
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BR rubber, or Butadiene rubber (polybutadiene), is classified under HS code 4002.20. This classification is part of the synthetic rubber section of the Harmonized System. Heading 4002 covers synthetic rubber in primary forms or in plates, sheets, or strip. Subheading 4002.20 is specifically designated for butadiene rubber (BR). Polybutadiene is a polymer formed from the polymerization of the monomer 1,3-butadiene. It is highly valued for its high resistance to wear and low temperature flexibility, making it a staple in tire manufacturing and footwear. To be classified here, the product must meet the definition of "synthetic rubber" provided in Note 4 to Chapter 40, which requires the substance to be an unsaturated synthetic substance that can be irreversibly transformed by vulcanization with sulfur into a non-thermoplastic substance. The classification applies to the raw material in its unvulcanized state. If the butadiene rubber is blended with other polymers, the classification may change depending on which polymer predominates by weight, following the rules for synthetic rubber mixtures.

Products Included

  • Polybutadiene (BR) in primary forms
  • Butadiene rubber bales
  • High-cis polybutadiene rubber
  • Unvulcanized BR rubber sheets

Common Misclassification

BR rubber is often misclassified under HS code 4002.19, which is for Styrene-butadiene rubber (SBR). While both contain butadiene, SBR is a copolymer of styrene and butadiene, whereas BR is a homopolymer of butadiene. Another common mistake is using HS code 4001, which is reserved for natural rubber. While BR is often used as a substitute for natural rubber, its synthetic origin requires classification in 4002. Additionally, if the BR is mixed with oil (oil-extended rubber), it still falls under 4002.20, but if it is mixed with carbon black or silica, it may move to 4005 (compounded rubber).

FAQ

What is the HS code for BR rubber?

The HS code for BR (Butadiene Rubber) is 4002.20, which covers polybutadiene in primary forms or unvulcanized sheets.

Is polybutadiene the same as SBR for HS classification?

No, polybutadiene (BR) is 4002.20, while Styrene-butadiene rubber (SBR) is 4002.11 or 4002.19, depending on the form.

Industry

Automotive & Vehicles
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Frequently Asked Questions

What is the HS code for BR rubber?

The HS code for BR rubber is 400220 (Rubber; synthetic, butadiene rubber (BR), in primary forms or in plates, sheets or strip).

How do I classify BR rubber for customs?

BR rubber is classified under HS code 400220 — Rubber; synthetic, butadiene rubber (BR), in primary forms or in plates, sheets or strip. This is a 6-digit subheading level code.

Is the HS code for BR rubber the same in all countries?

The base HS code 400220 for BR rubber is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.