Natural Rubber Flange
CN β US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 4016931010 | 37.5% | CN | US | Official Doc |
| 4016935010 | 37.5% | CN | US | Official Doc |
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βοΈ Natural Rubber Flange (Gaskets & Seals)
π HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Clearance Strategy
π Part I: Product Definition and Classification: Do You Really Understand "Natural Rubber Flanges"?
A "Natural Rubber Flange" in international trade typically refers to gaskets, washers, or seals made from vulcanized natural rubber. These components are critical for fluid control, pressure sealing, and vibration dampening in automotive, industrial, and mechanical systems.
In customs classification, the key distinction lies in material composition and application. The data provided specifically addresses items under Chapter 40 (Rubber and Articles Thereof), specifically focusing on vulcanized rubber other than hard rubber.
β οΈ Key Distinction:
- If the product is a flange plate (rigid structural part used to connect pipes) made of plastic or metal, it does not belong here.
- If it is a sealing gasket/washer attached to a flange, made of vulcanized rubber, it falls under Heading 4016.
- Critical Factor: The specific HS Code depends on whether it is designed for automotive goods (Chapter 87) or for general industrial use.
π¦ Part II: HS Code Classification Details (2026 Latest Tariff Authority Comparison)
Based on the provided <DATA>, the product falls under HS Code 4016.93 (Gaskets, washers and other seals). There are two specific sub-headings depending on the application:
| HS Code | Product Description | Application Scenario | Key Identification Feature |
|---|---|---|---|
4016.93.10.10 |
Gaskets, washers and other seals: Other O-Rings: Of a kind used in the automotive goods of chapter 87 | Automotive engine seals, transmission gaskets, fuel system seals | Must be demonstrably used in vehicles (cars, trucks, etc.) listed in Chapter 87. Often marked with OEM part numbers. |
4016.93.50.10 |
Gaskets, washers and other seals: Other O-Rings: Other | Industrial machinery, HVAC systems, plumbing, non-automotive equipment | General industrial use. Not specifically designated for automotive final products. |
π Important Note on "Flange" vs. "O-Ring":
- While the user input says "Flange," the provided HS codes are for O-Rings/Seals.
- In customs practice, a "rubber flange gasket" or "flange seal" is often classified under these O-ring/seal categories if it functions as a sealing element.
- If the item is a full flange face gasket (large flat ring), it still falls under4016.93(Gaskets, washers...), but the sub-code4016.93.10.10vs4016.93.50.10depends strictly on the end-use industry (Automotive vs. Other).
π° Part III: 2026 Latest Tariff Rate Breakdown (Detailed Tax Clauses)
β Applicable Country: United States (US)
β Origin: China (CN)
β Effective Time: Current rates apply for imports post-2025.
Both HS Codes in the provided data carry identical tax structures due to their shared category under Section XXVIII (Motor Vehicles) vs. Section XVII (Machinery), but both are subject to the same high-duty policy for Chinese origin goods.
π― 1. 4016.93.10.10 β Automotive Gaskets/Seals (Rubber)
| Item | Content |
|---|---|
| Base Tariff Rate | 2.5% (Ad valorem) |
| Additional Tariff (Section 301) | +25.0% |
| Total Tax Rate | 27.5% |
| Tax Calculation | CIF Value Γ 27.5% |
| De Minimis Exemption | β Not Applicable (High value item, not under $800) |
| Legal Basis | HTSUS:4016.93.10.10 + USITC Footnote 9903.03 (Section 301 List 4B) |
π Explanation:
- The 2.5% is the standard Most Favored Nation (MFN) rate for rubber gaskets.
- The +25% is a punitive tariff added under Section 301 of the Trade Act of 1974, targeting Chinese manufacturing goods.
- Total Impact: For every $10,000 of goods, you pay $2,750 in taxes. This significantly impacts profit margins.
π― 2. 4016.93.50.10 β Industrial Gaskets/Seals (Rubber, Non-Automotive)
| Item | Content |
|---|---|
| Base Tariff Rate | 2.5% (Ad valorem) |
| Additional Tariff (Section 301) | +25.0% |
| Total Tax Rate | 27.5% |
| Tax Calculation | CIF Value Γ 27.5% |
| De Minimis Exemption | β Not Applicable |
| Legal Basis | HTSUS:4016.93.50.10 + USITC Footnote 9903.03 (Section 301 List 4B) |
π Note:
- Even though this is for "Other" uses (not automotive), the Section 301 tariff still applies because rubber articles from China are broadly targeted.
- Do not assume "industrial" means "lower duty." The rate is the same as the automotive version in this dataset.
π οΈ Part IV: Customs Clearance Operational Advice (Practical Pitfall Guide)
β 1. Documentation Checklist (Essential for Smooth Clearance)
| Document | Required? | Explanation |
|---|---|---|
| β Product Specification Sheet | βοΈ | Must specify material (% Natural Rubber, vulcanization process), dimensions, and hardness (Shore A). |
| β Commercial Invoice | βοΈ | Clearly state "Vulcanized Rubber Gaskets/O-Rings." Avoid vague terms like "Rubber Parts." |
| β Bill of Lading | βοΈ | Ensure weight and quantity match invoice. |
| β Country of Origin Certificate | βοΈ | Crucial for verifying Chinese origin and applying/confirming Section 301 duties. |
| β End-Use Statement | βοΈ | Critical! Explicitly state if used in Automotive (Chapter 87) or Industrial/Machinery. This determines 4016.93.10.10 vs 4016.93.50.10. |
β 2. Classification Strategy (Key Mnemonics)
π₯ βAutomotive Get .10, Industrial Get .50, Both Pay 27.5%!β
| Scenario | Correct HS Code | Risk if Misclassified |
|---|---|---|
| Car engine gasket, OEM part | 4016.93.10.10 |
Misclassifying as "Other" (50.10) doesnβt change tax but may cause audit questions. |
| Pump seal for factory machine | 4016.93.50.10 |
Misclassifying as "Automotive" (10.10) is incorrect description, leading to delays. |
| Mixed shipment (Auto + Industrial) | Split Declaration | Do NOT bundle. Declare separately to ensure accurate description compliance. |
β 3. Special Handling Tips
| Situation | Advice |
|---|---|
| "Flange" vs. "Gasket" | If the item is a complete flange assembly (metal + rubber), it may be classified under the metal part. Only rubber-only sealing elements fall here. |
| Natural vs. Synthetic | The provided codes are for "Vulcanized Rubber other than hard rubber." Natural rubber is included. Ensure material is not hard rubber (ebonite), which falls under different codes. |
| Section 301 Exclusions | Check if the specific product code was removed from the tariff list (rare for rubber goods, but verify current USITC exclusions). Currently, 27.5% applies. |
π Part V: Global Market Comparison (2026 Overview)
| Country/Region | Recommended HS Code | Approx. Tariff (China Origin) | Notes |
|---|---|---|---|
| πΊπΈ USA | 4016.93.10.10 / .50.10 |
27.5% (2.5% base + 25% Sec 301) | High duty. Plan pricing accordingly. |
| π¨π³ China | 4016.93.10.00 / .50.00 |
Varies (0-10%) | Import duties for China may vary, but this data is for US exports. |
| πͺπΊ EU | 4016.93.10 |
4.5% (Standard) | No Section 301 equivalent. Lower cost than US. |
| π―π΅ Japan | 4016.93.10 |
6.0% | Standard MFN rate. |
π Conclusion:
- The US market is the most expensive for natural rubber flanges/seals due to the 25% Section 301 surcharge.
- EU and Asia offer significantly lower duty burdens. Consider supply chain diversification if US margins are tight.
π Part VI: Common Errors & Pitfalls (Lessons Learned)
β Error 1: Calling it "Rubber Flange" without specifying "Gasket" or "Seal"
π Consequence: Customs may reject vague descriptions or assign a higher-risk code, causing delays.
β
Fix: Use "Vulcanized Rubber Gasket for Flange Connection."
β Error 2: Assuming "Natural Rubber" gets a lower duty than "Synthetic Rubber"
π Consequence: Both fall under the same HS subheadings in Chapter 40 for this category.
β
Fix: Duty is based on HS Code, not just material name (unless specific material exceptions exist).
β Error 3: Ignoring the "Automotive" distinction
π Consequence: Misleading customs brokers. If you sell to auto manufacturers but classify as "Industrial," you risk an audit for misdescription.
β
Fix: Provide proof of end-use (e.g., BOM, customer PO) if audited.
π― Part VII: Conclusion: Precision is Profit
π― Remember the Mantra:
πΉ "Auto Use = .10, Industrial = .50, Both = 27.5% Total."
πΉ "Natural Rubber is Not Exempt from Section 301."
πΉ "Describe as 'Gasket/Seal,' not just 'Flange' to avoid confusion."
π Pro Tip:
If your products are transshipped through Vietnam or Mexico, ensure Rules of Origin are met to potentially avoid Section 301 duties. Direct shipment from China will almost certainly incur the 27.5% tariff.
π£ Immediate Action:
π Verify end-use with your customer.
π Prepare detailed specs.
π Accurate Classification = Faster Clearance + Predictable Costs.
β¨ Professional Clearance Starts with Exact Codes!
πΌ Donβt let 27.5% eat your profits. Classify correctly!
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About HS Code Classification
The Harmonized System (HS) is an internationally standardized nomenclature developed by the World Customs Organization (WCO) to classify traded products. Over 200 countries use the HS system as the basis for customs tariffs, trade statistics, and import/export regulations.
Each HS code follows a hierarchical structure:
- Chapter (2 digits) β Broad category of goods (e.g., Chapter 84: Machinery and Mechanical Appliances)
- Heading (4 digits) β More specific grouping within the chapter
- Subheading (6 digits) β Internationally standardized breakdown, used by all WCO member countries
- National subdivisions (8-10 digits) β Country-specific extensions for further classification, such as US HTSUS 10-digit codes
Correct HS code classification is essential for smooth customs clearance, accurate duty payment, and compliance with trade regulations. Misclassification can lead to customs delays, overpayment of duties, or penalties.
When importing from CN to US, the applicable tariff rates may include:
- Most-Favored-Nation (MFN) rate β The standard duty rate applied to WTO members
- General rate β Applied to countries without trade agreements
- Trade remedy duties β Additional tariffs such as Section 301 (anti-dumping), Section 232 (national security), or countervailing duties
The information provided on this page is for reference purposes only. For official classification, please consult with your local customs authority or a licensed customs broker.