Rubber Medicinal Stopper
CN β US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 4016990500 | 20.9% | CN | US | Official Doc |
| 4016991500 | 20.2% | CN | US | Official Doc |
| 3926904510 | 38.5% | CN | US | Official Doc |
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π©Έ Rubber Medicinal Stopper: HS Code Classification & US Customs Clearance Strategy (2026)
π HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional-Level Strategy
π I. Product Definition & Classification: Do You Really Understand "Rubber Stopper"?
Rubber Medicinal Stopper, also known as a Medical Rubber Plunger or Pharmaceutical Closure, is a critical component in the pharmaceutical industry. It serves as a seal for vials, ampoules, and bottles to maintain sterility, prevent contamination, and ensure dosage accuracy.
In international trade, these stoppers are primarily classified under Chapter 40 (Rubber and Articles Thereof). However, due to specific material compositions (e.g., silicone, latex, butyl rubber) and functional designs (e.g., pre-assembled with aluminum caps), the classification can vary.
β οΈ Key Distinction Points: - If made of solid rubber and functions as a simple plug/seal β Likely 4016.99 - If made of plastic-like rubber compounds or defined as general sealing parts with specific uses (like O-rings) β Could fall under 3926.90 (Plastic articles) depending on interpretation.
π¦ II. HS Code Classification Details (2026 Latest Tariff Authority Comparison)
Based on the provided data, here are the three possible HS Codes for Rubber Medicinal Stopper:
| HS Code | Product Description | Applicable Scenario | Material/Form Factor |
|---|---|---|---|
4016.99.05.00 |
Rubber Tube Plug, material is rubber, form is plug, meets requirements for vulcanized rubber products | Standard medicinal stoppers made of vulcanized rubber, simple shape | β Rubber, Vulcanized |
4016.99.15.00 |
Rubber Tube Plug, material is rubber, form is plug, matches "plug" in classification | Stopper specifically classified as "plug" in the rubber chapter | β Rubber, Plug |
3926.90.45.10 |
Rubber Tube Plug, material belongs to plastic/rubber category, form is sealing component, consistent with O-ring usage | Stopper considered a "sealing part" similar to O-rings, often involving plastic-rubber composites | β Plastic/Rubber, Sealing Part |
π Critical Note: -
4016.99.05.00and4016.99.15.00are the most common for pure rubber medicinal stoppers. -3926.90.45.10is riskier due to higher tariffs and may be rejected if the product is predominantly rubber and not a plastic article.
π° III. 2026 Latest Tariff Rate Details (Including Additional Taxes & Policy Add-ons)
β Applicable Country: United States (US)
β Origin: China (CN)
β Effective Time: Ongoing (as of 2026)
π― 1. 4016.99.05.00 ββ Rubber Tube Plug (Vulcanized Rubber)
| Item | Content |
|---|---|
| Base Tariff | 3.4% (ad valorem) |
| Section 301 Additional Tariff | 7.5% |
| Section 122 Tariff | 10% |
| Total Tariff Rate | 20.9% |
| Tax Calculation | CIF Value Γ 20.9% |
| De Minimis Eligibility | β No (Not eligible for de minimis exemption) |
| Legal Basis Path | HTSUS:4016.99.05.00 β Section 301: Footnote 1 β Section 122: 10% surcharge |
π Explanation: - Base Tariff (3.4%): Standard MFN rate for rubber articles not specified elsewhere. - Section 301 (7.5%): Trade remedy tariff on Chinese goods. - Section 122 (10%): Additional surcharge under U.S. trade law for certain rubber products. - Total: 20.9%. This is a moderate-to-high tariff for rubber goods.
π― 2. 4016.99.15.00 ββ Rubber Tube Plug (Plastic-like Rubber/Plug Form)
| Item | Content |
|---|---|
| Base Tariff | 2.7% (ad valorem) |
| Section 301 Additional Tariff | 7.5% |
| Section 122 Tariff | 10% |
| Total Tariff Rate | 20.2% |
| Tax Calculation | CIF Value Γ 20.2% |
| De Minimis Eligibility | β No |
| Legal Basis Path | HTSUS:4016.99.15.00 β Section 301: Footnote 1 β Section 122: 10% surcharge |
π Note: - Slightly lower base tariff (2.7% vs 3.4%) due to specific subheading for "plugs". - Still subject to the same additional tariffs. - Total: 20.2%. Marginally cheaper than the previous code.
π― 3. 3926.90.45.10 ββ Rubber Tube Plug (Sealing Part/O-Ring Like)
| Item | Content |
|---|---|
| Base Tariff | 3.5% (ad valorem) |
| Section 301 Additional Tariff | 25.0% |
| Section 122 Tariff | 10% |
| Total Tariff Rate | 38.5% |
| Tax Calculation | CIF Value Γ 38.5% |
| De Minimis Eligibility | β No |
| Legal Basis Path | HTSUS:3926.90.45.10 β Section 301: Footnote 9903.88.01 β Section 122: 10% surcharge |
π Critical Warning: - Base Tariff (3.5%): For plastic articles. - Section 301 (25%): Significantly higher than for rubber articles (7.5%). - Section 122 (10%): Same as above. - Total: 38.5%. This is a very high tariff. - Risk: Misclassifying a rubber stopper as a plastic sealing part will result in massive overpayment of duties.
π οΈ IV. Customs Clearance Operational Advice (Practical Pitfall Avoidance Guide)
β 1. Required Documentation Checklist (Non-negotiable)
| Document | Mandatory | Description |
|---|---|---|
| β Product Specification Sheet | βοΈ | Must detail material (rubber type), hardness, shape, and intended use (medicinal stopper). |
| β Material Composition Report | βοΈ | Confirm if it is 100% rubber or contains plastic. Critical for distinguishing between 4016 and 3926. |
| β Product Photos (Labeled) | βοΈ | Show close-ups of the stopper, any markings, and packaging. |
| β Commercial Invoice | βοΈ | Clearly state "Rubber Medicinal Stopper" and HS Code. |
| β Packing List | βοΈ | Indicate quantity, weight, and value. |
| β Certificate of Origin (CO) | βοΈ | Required to prove Chinese origin (triggers Section 301). |
| β FDA Registration (if applicable) | βοΈ | For medical devices, FDA compliance may be required for entry, even if not a tariff issue. |
β 2. Declaration Strategy (Key Mnemonics)
π₯ "Rubber is 40, Plastic is 39; 3926 is a Trap, 4016 is Safe!"
| Scenario | Correct Declaration | Incorrect Declaration | Consequence |
|---|---|---|---|
| Pure Rubber Stopper | 4016.99.05.00 or 4016.99.15.00 |
3926.90.45.10 |
Overpay by ~18% |
| Rubber Stopper with Plastic Cap | Separate components or declare as set | Mix into one line | Misclassification Risk |
| Silicone Stopper | Still likely 4016.99 (if rubber-like) |
3926.90 |
Higher Tariff Risk |
β 3. Special Case Handling
| Scenario | Handling Advice |
|---|---|
| Pre-assembled with Aluminum Cap | Declare only the rubber stopper if separated at clearance; if assembled, consider "closure set" classification. |
| Silicone vs. Natural Rubber | Both fall under Chapter 40 if vulcanized. Ensure documentation specifies "Vulcanized Rubber". |
| Sample Shipments | Even samples are subject to full tariffs. Do not claim de minimis exemption. |
| FDA Compliance | While not a tariff issue, non-compliance can lead to detention at port. Ensure FDA registration is up to date. |
π V. Global Market Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Tariff Rate (China Origin) | Certification Requirements | Notes |
|---|---|---|---|---|
| πΊπΈ USA | 4016.99.05.00 |
20.9% | FDA + RoHS | High tariff due to Section 301 & 122 |
| π¨π³ China | 4016.99.05.00 |
~5-10% | CCC (if applicable) | Lower tariffs for domestic trade |
| πͺπΊ EU | 4016.99.00 |
0-6.5% | CE + Medical Device Regulation (MDR) | No Section 301 equivalent |
| π¬π§ UK | 4016.99.00 |
0-6.5% | UKCA + MHRA | Post-Brexit rules apply |
| π―π΅ Japan | 4016.99.00 |
0-7.9% | PSE + Pharmaceuticals and Medical Devices Act | No Section 301 |
π Conclusion: - The USA is the most expensive market for rubber medicinal stoppers due to Section 301 and Section 122 tariffs. - EU and Japan offer significantly lower tariff barriers. - Supply Chain Diversification (e.g., sourcing from Vietnam or India) may help avoid Section 301 tariffs if rules of origin are met.
π VI. Common Mistakes & Pitfall Avoidance (Lessons Learned)
β Mistake 1: Classifying rubber stoppers under Plastic (3926) to try and find a "better" rate.
π Result: Higher tariff (38.5%) and potential customs audit for misclassification.
β Mistake 2: Ignoring Section 122 tariffs.
π Result: Underpayment of 10% on all rubber articles, leading to penalties.
β Mistake 3: Assuming De Minimis applies for small samples.
π Result: All shipments are subject to full tariffs, regardless of value.
β Mistake 4: Not providing Material Composition proof.
π Result: Customs may reclassify based on suspicion, leading to delays and additional fees.
β Correct Practice:
"Vulcanized Rubber Medicinal Stopper, HS Code 4016.99.05.00, 100% Rubber, No Plastic Components, FDA Registered Facility"
π― VII. Conclusion: Professional Declaration, Time & Cost Saving!
π― Remember the Key Points:
πΉ "Rubber is 40, Plastic is 39; Don't fall for 3926's trap!"
πΉ "Section 301 and 122 add 17.5% to your cost; Plan accordingly!"
πΉ "De Minimis does NOT apply; Every shipment is taxed!"
π Pro Tip: If your rubber stoppers are originally from Vietnam, Mexico, India, or Thailand, you may qualify for exemptions from Section 301 tariffs, reducing the total rate to just 3.4% - 13.5% (depending on the country). Recommendation: Obtain a Advance Ruling from U.S. Customs (CBP) for your specific product design to ensure correct classification.
π£ Immediate Action:
π Contact a Professional Customs Broker
π Provide Product Photos + Material Report
π Secure Correct HS Code Before Shipment
β¨ Professional Customs Clearance Starts with Accurate Classification!
πΌ Every Cent of Your Cost Deserves Precision!
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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.