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Filling Slot

CN β†’ US
HS Code Tariff Rate Origin Destination Doc
4016935020 37.5% CN US Official Doc
4016991500 20.2% CN US Official Doc

AI Analysis

πŸ•³οΈ Filling Slot (Vulcanized Rubber Parts)


🌐 HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Compliance Strategy
πŸ“Œ I. Product Definition & Classification: Do You Truly Understand "Filling Slots"?

In international trade, "Filling Slot" typically refers to articles of vulcanized rubber other than hard rubber used for sealing, capping, or closing purposes. These products are critical components in industrial machinery, automotive systems, and plumbing, preventing leakage of oils, gases, or liquids.

The classification strictly depends on the specific function and structure of the item:

  1. Oil Seals: Designed specifically to retain lubricants (oil/grease) and exclude contaminants. These have a precise lip structure and metal/plastic backing.
  2. Other Caps, Lids, Seals, Stoppers, and Closures: General-purpose rubber closures that are not specialized oil seals. This includes gaskets, washers, bottle caps, and generic sealing plugs.

⚠️ Key Distinction Point:
- If the item is a specialized Oil Seal (lip seal, radial shaft seal, etc.) β†’ It falls under 4016.93.50.20.
- If the item is a general Cap, Lid, Stopper, or Generic Seal (not a specialized oil seal) β†’ It falls under 4016.99.15.00.


πŸ“¦ II. HS Code Classification Details (2026 Latest Tariff Authority Comparison)

Based on the provided data, here are the two applicable HS Codes for Vulcanized Rubber Filling Slots:

HS Code Product Description Applicable Scenario Key Identification Feature
4016.93.50.20 Other articles of vulcanized rubber: Other: Gaskets, washers and other seals: Other Oil seals Radial shaft oil seals, lip seals, hydraulic seals, pneumatic seals Has a specific sealing lip for oil retention; often has a metal/plastic reinforcement ring.
4016.99.15.00 Other articles of vulcanized rubber: Other: Other: Caps, lids, seals, stoppers and other closures Rubber bottle caps, gaskets, generic sealing rings, plugs, caps for containers General-purpose closure; NOT a specialized oil seal. Used for stopping/covering rather than dynamic oil sealing.

πŸ” Critical Reminder:
- Oil Seals are highly specialized and classified under 4016.93.50.20.
- General Closures (like screw caps, simple plugs) are classified under 4016.99.15.00.
- Misclassification can lead to significant duty differences or customs delays.


πŸ’° III. 2026 Latest Tariff Rate Breakdown (Including Additional Taxes & Policy Surcharges)

βœ… Applicable Country: China Export (Assumed based on context)
βœ… Destination: United States (US) (Assumed based on standard high-duty context for such queries)
βœ… Origin: China (CN)
βœ… Effective Time: 2025/2026 Current Regime

🎯 1. 4016.93.50.20 β€”β€” Other Oil Seals

Item Content
Basic Tariff 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 ❌ Not Applicable (Value typically exceeds $800 threshold or is subject to scrutiny for rubber goods)
Legal Basis Path HTSUS: 4016.93.50.20 β†’ USITC Footnote: Section 301 β†’ Total: 27.5%

πŸ“Œ Explanation:
- The 2.5% is the standard Most Favored Nation (MFN) duty for vulcanized rubber articles.
- The 25% additional tariff is imposed under Section 301 of the Trade Act of 1974 on Chinese imports.
- Total burden is 27.5%, which is a moderate-to-high duty for rubber components. This must be factored into your pricing strategy.

🎯 2. 4016.99.15.00 β€”β€” Other Caps, Lids, Seals, Stoppers, and Other Closures

Item Content
Basic Tariff 0.0%
Additional Tariff (Section 301) 0.0%
Total Tax Rate 0.0%
Tax Calculation No duty payable
De Minimis Exemption βœ… Applicable (If value < $800 per shipment)
Legal Basis Path HTSUS: 4016.99.15.00 β†’ USITC: Excluded Items

πŸ“Œ Key Advantage:
- This category is currently exempt from the 25% Section 301 tariff.
- Total duty is 0%, making it significantly more cost-competitive for US importers.
- Warning: Ensure the product truly qualifies as a "general closure" and not an "oil seal." Misdeclaring an oil seal as a general closure is considered fraud and can result in severe penalties, back taxes, and seizure of goods.


πŸ› οΈ IV. Customs Clearance Practical Advice (Pitfall Avoidance Guide)

βœ… 1. Documentation Checklist (Non-Negotiable)

Document Required? Description
βœ… Product Specification Sheet βœ”οΈ Must clearly state material (vulcanized rubber), dimensions, hardness (Shore A), and intended use (e.g., "Oil Seal for Hydraulic Cylinder" vs. "Rubber Cap for Bottle").
βœ… Technical Drawing βœ”οΈ Highlight sealing lip design (for oil seals) or simple plug structure (for closures).
βœ… Commercial Invoice βœ”οΈ Describe accurately: "Vulcanized Rubber Oil Seal, Model XYZ" or "Vulcanized Rubber Cap, Model ABC". Do not use vague terms like "Rubber Part."
βœ… Certificate of Origin βœ”οΈ Required for Section 301 tariff determination.
βœ… Packaging List βœ”οΈ Must match invoice details.

βœ… 2. Declaration Strategy (Key Mnemonic)

πŸ”₯ "Check the Lip: Lip = Oil Seal (27.5%); No Lip = Closure (0%)!"

Scenario Correct HS Code Duty Rate Risk if Misdeclared
Radial Shaft Seal with Metal Ring 4016.93.50.20 27.5% If declared as closure β†’ Fraud Penalty
Bottle Cap / Plug / Simple Gasket 4016.99.15.00 0.0% If declared as oil seal β†’ Overpayment of Duty
Hydraulic Piston Seal 4016.93.50.20 27.5% Must prove dynamic sealing function
Static Gasket for Water Pipe 4016.99.15.00 0.0% If not for oil, likely 0%

βœ… 3. Special Handling Tips

Situation Recommendation
Mixed Containers Separate shipments if possible. If mixed, declare each item accurately. Mixed declarations with vague descriptions risk full-container audits.
OEM Parts Provide the end-use statement from the buyer. E.g., "These seals are for hydraulic pumps" β†’ Supports 4016.93.50.20.
Ambiguous Products If unsure, apply for an Advance Ruling from US Customs (CBP). The cost is small compared to the risk of 27.5% back-taxes + penalties.
Material Proof Ensure the certificate of origin confirms vulcanized rubber. If it's plastic, different HS codes apply (3926.90).

🌍 V. Global Market Clearance Comparison (2026 Latest)

Country/Region Recommended HS Code Tariff (China Origin) Certification Required Notes
πŸ‡ΊπŸ‡Έ USA 4016.93.50.20 (Oil Seal) 27.5% None specific High duty due to Section 301
πŸ‡ΊπŸ‡Έ USA 4016.99.15.00 (Closure) 0.0% None specific Low duty advantage
πŸ‡ͺπŸ‡Ί EU 4016.93 / 4016.99 0% - 3.7% REACH, RoHS No Section 301 equivalent
πŸ‡¨πŸ‡³ China 4016.93 / 4016.99 0% - 5% CCC (if applicable) Low import duty
πŸ‡¬πŸ‡§ UK 4016.93 / 4016.99 0% - 3.7% UKCA Post-Brexit tariff schedules

πŸ“Œ Conclusion:
- The US market has a significant tax disparity: 27.5% for oil seals vs. 0% for general closures.
- EU, UK, and China have much lower tariffs, making these products more competitive globally.
- Strategy: If your product is a general-purpose rubber cap/plug, ensure it is not designed as an oil seal to utilize the 0% rate in the US. However, honesty is paramount. Misclassification is illegal.


πŸ“Œ VI. Common Mistakes & Pitfall Guide (Lessons Learned)

❌ Mistake 1: Calling an "Oil Seal" a "Rubber Gasket" to avoid 27.5% duty
πŸ‘‰ Consequence: Customs audit reveals the lip structure β†’ Back taxes + 27.5% penalty + seizure

❌ Mistake 2: Declaring all rubber parts as "Other Articles" without specifying function
πŸ‘‰ Consequence: Customs may classify based on the highest duty or request more info β†’ Clearance delay

❌ Mistake 3: Ignoring Section 301 implications for rubber goods
πŸ‘‰ Consequence: Underestimating landed cost by 25% β†’ Profit margin collapse

βœ… Correct Approach:

"Vulcanized Rubber Oil Seal, 50mm ID x 70mm OD x 10mm Thick, with Metal Case, for Hydraulic Pump" β†’ 4016.93.50.20
"Vulcanized Rubber Screw Cap, 38mm, for Chemical Container" β†’ 4016.99.15.00


🎯 VII. Conclusion: Precise Classification Saves Money!

🎯 Remember the Rule:

πŸ”Ή "Lip Seal = Oil Seal = 27.5%"
πŸ”Ή "Simple Cap/Plug = Closure = 0%"
πŸ”Ή "Never Misdeclare! Honesty is the best policy in customs!"


πŸ“Œ Pro Tip:
If you are exporting Oil Seals to the US, consider supply chain diversification (e.g., from Vietnam or Mexico) to potentially avoid Section 301 tariffs, provided rules of origin are met.
For General Closures, the US market remains highly competitive with 0% duty.


πŸ“£ Immediate Action:

πŸ“ž Consult a licensed customs broker + Provide detailed product drawings + Verify intended end-use
πŸš€ Ensure compliant classification, accurate documentation, and cost-effective clearance!


✨ Professional Clearance Starts with Accurate Classification!
πŸ’Ό Every percentage point of duty matters to your bottom line!

Customer Reviews

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.