Rubber; synthetic, acrylonitrile-butadiene rubber (NBR), latex, in primary forms or in plates, sheets or strip

HS v2022 Code: 400251

About rubber; synthetic, acrylonitrile-butadiene rubber (nbr), latex, in primary forms or in plates, sheets or strip

HS code 400251 covers the import and export of synthetic acrylonitrile-butadiene rubber (NBR), a type of synthetic rubber with a wide range of industrial applications. NBR is known for its excellent resistance to oil, chemicals, and abrasion, making it a crucial material in the manufacturing of various products across industries such as automotive, machinery, and construction. As a key component in the global supply chain, the trade of NBR plays a significant role in the broader economy.

Production process

The production of NBR involves the copolymerization of acrylonitrile and butadiene monomers. This process is typically carried out in an emulsion or solution polymerization system, where the monomers are combined and catalyzed to form the NBR polymer. The resulting latex or crumb rubber is then further processed, often through compounding, extrusion, or molding, to create the desired NBR products in primary forms or as plates, sheets, or strips.

Production inputs

The main inputs required for the production of NBR include acrylonitrile and butadiene monomers, as well as various additives and processing aids such as antioxidants, vulcanizing agents, and fillers. Specialized machinery, such as reactors, extruders, and molding equipment, is also essential for the manufacturing process. Additionally, the industry relies on a skilled workforce with expertise in polymer chemistry and rubber processing.

Production outputs

The primary outputs of HS code 400251 are NBR in various forms, including latex, crumb rubber, and sheets or strips. These NBR products are then consumed by a wide range of industries, including 400270 Rubber; vulcanized, other than hard rubber, in plates, sheets, strip, rods and profile shapes, 401110 Rubber; new pneumatic tyres, of a kind used on motor cars, and 401220 Rubber; new pneumatic tyres, of a kind used on buses or lorries, among others. The versatility of NBR makes it a crucial material in the production of a diverse range of goods, from automotive components to industrial seals and gaskets.

Revisions to 400251

Classification codes are adjusted frequently. The code may have been revised or replaced between system versions. The table below shows the history (newest to oldest) of the code 400251. The most recent 1 version of this code (400251) is in the HS v2022 system (this version):

This page shows the most recent version of code 400251.

Family tree for rubber; synthetic, acrylonitrile-butadiene rubber (nbr), latex, in primary forms or in plates, sheets or strip

    graph LR
    A["<a href='/classifications/hs/v2022/40'>40: Rubber and articles thereof</a>"]
A --> B["<a href='/classifications/hs/v2022/4002'>4002: Synthetic rubber and factice derived from oils, in primary forms or in plates, sheets or strip; mixtures of heading no. 4001 and 4002, in primary forms or in plates, sheets or strip</a>"]
B --> C["<a href='/classifications/hs/v2022/400251'>400251: Rubber; synthetic, acrylonitrile-butadiene rubber (NBR), latex, in primary forms or in plates, sheets or strip</a>"]

    B --> D["<a href='/classifications/hs/v2022/400211'>400211: Rubber; synthetic, styrene-butadiene rubber (SBR) and carboxylated styrene-butadiene rubber (XSBR) latex, in primary forms or in plates, sheets or strip</a>"]
B --> E["<a href='/classifications/hs/v2022/400219'>400219: Rubber; synthetic, styrene-butadiene rubber (SBR) and carboxylated styrene-butadiene rubber (XSBR), (other than latex), in primary forms or in plates, sheets or strip</a>"]
B --> F["<a href='/classifications/hs/v2022/400220'>400220: Rubber; synthetic, butadiene rubber (BR), in primary forms or in plates, sheets or strip</a>"]
B --> G["<a href='/classifications/hs/v2022/400231'>400231: Rubber; synthetic, isobutene-isoprene (butyl) rubber (IIR), in primary forms or in plates, sheets or strip</a>"]
B --> H["<a href='/classifications/hs/v2022/400239'>400239: Rubber; synthetic, halo-isobutene-isoprene rubber (CIIR or BIIR), in primary forms or in plates, sheets or strip</a>"]
B --> I["<a href='/classifications/hs/v2022/400241'>400241: Rubber; synthetic, chloroprene (chlorobutadiene) rubber (CR), latex, in primary forms or in plates, sheets or strip</a>"]
B --> J["<a href='/classifications/hs/v2022/400249'>400249: Rubber; synthetic, chloroprene (chlorobutadiene) rubber (CR), (other than latex), in primary forms or in plates, sheets or strip</a>"]
B --> K["<a href='/classifications/hs/v2022/400259'>400259: Rubber; synthetic, acrylonitrile-butadiene rubber (NBR), (other than latex), in primary forms or in plates, sheets or strip</a>"]
B --> L["<a href='/classifications/hs/v2022/400260'>400260: Rubber; synthetic, isoprene rubber (IR), in primary forms or in plates, sheets or strip</a>"]
B --> M["<a href='/classifications/hs/v2022/400270'>400270: Rubber; synthetic, ethylene-propylene-non-conjugated diene rubber (EPDM), in primary forms or in plates, sheets or strip</a>"]
B --> N["<a href='/classifications/hs/v2022/400280'>400280: Rubber; mixtures of natural and synthetic rubbers of heading no. 4001 and 4002, in primary forms or in plates, sheets or strip</a>"]
B --> O["<a href='/classifications/hs/v2022/400291'>400291: Rubber; synthetic, n.e.c. in heading 4002, latex, in primary forms or in plates, sheets or strip</a>"]
B --> P["<a href='/classifications/hs/v2022/400299'>400299: Rubber; synthetic, n.e.c. in heading 4002, (other than latex), in primary forms or in plates, sheets or strip</a>"]

    

    %% Color coordination by level

    classDef level1 color:#000,fill:#a8f9ff,stroke:#333,stroke-width:2px
    classDef level2 color:#000,fill:#e0a458,stroke:#333,stroke-width:1px
    classDef level3 color:#000,fill:#419d78,stroke:#333,stroke-width:1px
    classDef level4 color:#000,fill:#c04abc,stroke:#333,stroke-width:1px
    classDef level5 color:#000,fill:#f1c40f,stroke:#333,stroke-width:1px
    classDef level6 color:#000,fill:#f1c40f,stroke:#333,stroke-width:1px
    classDef highlight color:#000,fill:#fff,stroke:#000,stroke-width:5px



  %% Apply classes
  class A level2
class B level4
class C level6
class D level6
class E level6
class F level6
class G level6
class H level6
class I level6
class J level6
class K level6
class L level6
class M level6
class N level6
class O level6
class P level6

  class C highlight

  %% class A level1
  %% class B,C level2
  %% class D,E,F,G,H,I level2
  %% class J,K,L,M,N,O,P level3
  %% class C highlight