HS-6 · Subheading
400231
Rubber; synthetic, isobutene-isoprene (butyl) rubber (IIR), in primary forms or in plates, sheets or strip
Heading 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
Chapter 40: Rubber and articles thereof
Plain-language overview
Use HS-6 400231 when importing or exporting synthetic isobutene-isoprene (butyl) rubber in primary forms, such as sheets or strips. For example, a shipment of butyl rubber sheets used in tire manufacturing falls under this code.
This code specifically applies to synthetic rubber, distinguishing it from natural rubber and other synthetic varieties. For instance, HS-6 400239 covers other types of synthetic rubber, which may not be suitable for the same applications as butyl rubber.
When classifying products, note that HS-6 400231 is for butyl rubber in its primary form, while HS-6 400261 refers to mixtures involving natural rubber. Understanding these distinctions is crucial for accurate classification and compliance.
If you're dealing with butyl rubber sheets used for sealing applications in automotive parts or as a lining material in industrial containers, this HS code is appropriate. It’s essential to ensure your product specifications align with this classification.
Keywords & topics
Short phrases that describe this HS-6 subheading when you're searching or filtering schedules.
synthetic rubber classification · butyl rubber sheets · HS code for rubber · primary forms of rubber · automotive rubber products · industrial rubber applications · butyl rubber uses · rubber import regulations · customs classification rubber · synthetic rubber shipments · rubber export documentation · rubber product specifications
Examples
Drawn from the official tariff wording for this HS-6 subheading. Always confirm against your published schedule and legal notes.
- Sheets of butyl rubber for tire production
- Strips of synthetic rubber used in automotive gaskets
- Primary forms of butyl rubber for soundproofing applications
- Rolls of butyl rubber for roofing membranes
- Extruded butyl rubber profiles for window seals
- Butyl rubber sheets used in medical device manufacturing
- Synthetic rubber strips for insulation in electrical applications
Common questions
How people often phrase their search when they're trying to classify goods like yours.
- What is HS code 400231 used for?
- How to classify butyl rubber for customs?
- Are there different types of synthetic rubber?
- What products fall under HS-6 400231?
- How to import synthetic rubber sheets?
- What are the uses of butyl rubber?
- Can I use HS-6 400231 for rubber strips?
- What is the difference between butyl rubber and other synthetic rubbers?
Related topics
Longer phrases that come up when you're comparing codes or talking to a broker.
- how to classify butyl rubber for import
- examples of products under HS code 400231
- what is the application of synthetic rubber sheets
- guidelines for importing synthetic rubber
- differences between butyl rubber and natural rubber
- how to determine the correct HS code for rubber products
- customs requirements for synthetic rubber imports
- best practices for shipping butyl rubber
Questions & answers
For orientation only—the binding text is your national tariff and the WCO nomenclature your country uses.
- What types of products are classified under HS-6 400231?
- HS-6 400231 covers synthetic isobutene-isoprene (butyl) rubber in primary forms, such as sheets and strips, used in various applications including tires and seals.
- How do I know if my rubber product falls under this HS code?
- Check if your product is synthetic butyl rubber in primary form. If it is, then HS-6 400231 is likely the correct classification.
- Can I use HS-6 400231 for rubber mixtures?
- No, HS-6 400231 specifically applies to pure butyl rubber. For mixtures, you may need to look at other codes like HS-6 400261.
- What documentation do I need for importing butyl rubber?
- Ensure you have a detailed product description, invoices, and any necessary certificates of origin or compliance for customs clearance.
- Is there a difference between butyl rubber and other synthetic rubbers?
- Yes, butyl rubber is specifically made from isobutene and isoprene, offering unique properties like low permeability to gases, unlike other synthetic rubbers.
- What are common applications for butyl rubber?
- Common applications include tire manufacturing, automotive gaskets, soundproofing materials, and roofing membranes.
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