金属垫片
CN → US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 8484900000 | 37.5% | CN | US | Official Doc |
| 8484100000 | 37.5% | CN | US | Official Doc |
| 7318220000 | 85.0% | CN | US | Official Doc |
| 7318210090 | 90.8% | CN | US | Official Doc |
| 8484100000 | 37.5% | CN | US | Official Doc |
AI Analysis
🛡️ Metal Gaskets (Metal Gaskets / Washers)
🌐 HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Clearance Strategy 📌 1. Product Definition & Classification: Do You Really Understand "Metal Gaskets"?
Metal gaskets are critical sealing components used in high-pressure, high-temperature, or high-vacuum applications (e.g., flanges, pipes, pressure vessels). In international trade, their classification hinges on material composition (Iron, Steel, Aluminum, Copper) and structural form (Gasket vs. Washer vs. Composite).
Key Distinction Points: - Composite Gaskets (Section 8484): Made of metal sheets combined with other materials (e.g., graphite, rubber, PTFE). These fall under "Gaskets of similar material or combination." - Solid Metal Gaskets/Washers (Section 7318): Made entirely of iron, steel, aluminum, or copper. If they function as "washers" or simple metal rings, they fall under "Screws, bolts, nuts, cap screws, coach screws, rivets, cotters, cotter-pins, washers... of iron or steel" (or other metals).
⚠️ Critical Warning: Misclassification between 8484 (Composite) and 7318 (Solid Metal) can lead to significant tariff discrepancies due to Section 301 and 122 clause additions.
📦 2. HS Code Classification Details (Based on Provided Data)
| HS Code | Product Description | Matching Logic & Summary | Total Tax Rate |
|---|---|---|---|
| 8484.90.00.00 | Gaskets and similar joints of metal sheeting combined with other material or of two or more layers of metal | Match Basis: Product contains metal materials, fitting the "metal sheets combined with other materials" characteristic; shape is a gasket, falling under the "Others" category. | 37.5% |
| 8484.10.00.00 | Gaskets and similar joints of metal sheeting combined with other material or of two or more layers of metal | Match Point: Product contains "metal" and "gasket" keywords; fits the definition of "metal sheets combined with other materials" in material and form. (Note: Listed twice in data with identical tax logic) | 37.5% |
| 7318.22.00.00 | Threaded washers of iron or steel | Match Success: The "metal" in the product name is highly consistent with "articles of iron or steel" in the classification, and the shape belongs to "washers" (or gaskets classified as washers). | 85.0% |
| 7318.21.00.90 | Non-threaded washers of iron or steel | Match Point: Material (metal) fits the category of iron/steel articles; shape (washer/gasket) completely matches the classification. | 90.8% |
🔍 Key Insight: - 8484 Codes apply if the gasket is composite (metal + non-metal) or layered metal. Lower base tariff but subject to specific additional duties. - 7318 Codes apply if the gasket is solid metal (iron/steel). Higher base tariff and heavier additional tariffs due to "Steel/Aluminum/Copper" specific rules.
💰 3. 2026 Latest Tariff Rate Breakdown (Including Surcharges & Policy Add-ons)
✅ Applicable Country: United States (US) ✅ Country of Origin: China (CN) ✅ Effective Date: Current regulations including Section 301 and Section 232/122 provisions
🎯 1. 8484.90.00.00 & 8484.10.00.00 —— Composite/Combined Metal Gaskets
| Item | Detail |
|---|---|
| Base Duty | 2.5% (Ad Valorem) |
| Section 301 Surcharge | +25.0% (List 4A/B on Chinese imports) |
| Section 122 Surcharge | +10.0% (Specific trade remedy provision) |
| Total Effective Rate | 37.5% |
| Tax Calculation | CIF Value × 37.5% |
| De Minimis Exemption | ❌ Not Eligible (Deny de minimis for goods subject to Section 301/122) |
| Legal Basis Path | HTSUS:8484 → USITC:301:25% → IEEPA/122:10% |
📌 Explanation: - Base 2.5%: Standard MFN duty for gaskets of metal sheeting. - 25% Section 301: Applies to most steel/iron-related industrial products and specific gasket codes. - 10% Section 122: An additional duty imposed on certain imports, often overlapping with Section 301. - Result: A significantly higher cost base, but lower than the solid steel washer classification.
🎯 2. 7318.22.00.00 —— Threaded Washers/Gaskets (Iron/Steel)
| Item | Detail |
|---|---|
| Base Duty | 0.0% (Ad Valorem) |
| Section 301 Surcharge | +25.0% |
| Section 122 Surcharge | +10.0% |
| Section 232/Specific Metal Surcharge | +50.0% (Applied to Steel/Aluminum/Copper articles) |
| Total Effective Rate | 85.0% |
| Tax Calculation | CIF Value × 85.0% |
| De Minimis Exemption | ❌ Not Eligible |
| Legal Basis Path | HTSUS:7318.22 → USITC:301:25% → IEEPA/122:10% → Section 232:50% |
📌 Explanation: - Base 0%: Steel washers/gaskets often have zero base duty. - 50% Metal Surcharge: This is the killer. Under Section 232 (national security) or specific 122/301 expansions, "Steel products" face a massive 50% additive duty. - Total 85%: This is an extremely high tariff rate. Misclassifying a solid steel gasket here when it should be composite (8484) could double your costs.
🎯 3. 7318.21.00.90 —— Non-Threaded Washers/Gaskets (Iron/Steel)
| Item | Detail |
|---|---|
| Base Duty | 5.8% (Ad Valorem) |
| Section 301 Surcharge | +25.0% |
| Section 122 Surcharge | +10.0% |
| Section 232/Specific Metal Surcharge | +50.0% (Applied to Steel/Aluminum/Copper articles) |
| Total Effective Rate | 90.8% |
| Tax Calculation | CIF Value × 90.8% |
| De Minimis Exemption | ❌ Not Eligible |
| Legal Basis Path | HTSUS:7318.21 → USITC:301:25% → IEEPA/122:10% → Section 232:50% |
📌 Explanation: - Base 5.8%: Non-threaded washers have a higher base duty than threaded ones. - Total 90.8%: This is the highest possible rate in the provided data. Avoid this classification unless the product is strictly non-threaded solid steel.
🛠️ 4. Customs Clearance Practical Advice (Real-World Pitfall Guide)
✅ 1. Preparation Checklist (Essential Documents)
| Document | Required? | Purpose |
|---|---|---|
| ✅ Product Specification Sheet | ✔️ | Must clearly state: Material (e.g., "Stainless Steel 316", "Composite Metal-Graphite"), Dimensions, Standard (e.g., ASME, DIN). |
| ✅ Technical Drawing | ✔️ | Crucial: Shows if the gasket is solid (one piece) or composite (layered). This determines 8484 vs. 7318. |
| ✅ Product Photos | ✔️ | Clear shots of the gasket edge (to see layers) and surface (threaded vs. non-threaded). |
| ✅ Commercial Invoice | ✔️ | Description should be precise: "Metal Gasket, Composite, for Pipe Flange" vs. "Steel Washer". |
| ✅ Material Test Report | ✔️ | Proves alloy composition (e.g., verifies it's stainless steel, not carbon steel, if applicable). |
✅ 2. Declaration Strategy (Key Mantras)
🔥 "Composite Go to 8484, Solid Steel Hits 90%! Check Layers!"
| Scenario | Correct Declaration | Error Consequence |
|---|---|---|
| Composite Gasket (Metal + Graphite/Rubber) | 8484.10.00.00 or 8484.90.00.00 |
If misdeclared as steel → 85-90% Tax |
| Solid Steel Washer/Gasket (No other material) | 7318.21.00.90 or 7318.22.00.00 |
If misdeclared as composite → Underpayment Penalty |
| Threaded vs. Non-Threaded | Check if there are threads on the outer/inner diameter. | Non-threaded 7318.21 is higher tax (90.8%) than threaded 7318.22 (85.0%). |
| Aluminum/Copper Gaskets | Use appropriate metal chapter (e.g., 74, 76) if not steel. | Data shows "Steel/Aluminum/Copper" surcharges apply similarly. |
✅ 3. Special Handling Cases
| Situation | Recommendation |
|---|---|
| OEM Custom Gaskets | Provide customer drawings. Ensure "Material" is specified as "Composite" if it includes sealing elements (graphite, PTFE). |
| High-Pressure Metal Gaskets (Ring Joints) | Often classified under 7318 if solid. Verify if they are considered "Washers" or "Gaskets" under 8484. Solid metal ring joints often fall under 7318. |
| Gaskets with Threads | If threads are cut into a metal gasket, it may be classified as a "Washer" (7318) rather than a pure gasket (8484), triggering higher tariffs. |
| Origin Marking | Ensure "Made in China" is clearly marked on the product or packaging to avoid origin evasion claims. |
🌍 5. Global Market Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Estimated Tariff (China Origin) | Key Certification | Remarks |
|---|---|---|---|---|
| 🇺🇸 USA | 8484.10.00.00 (Composite) |
37.5% | N/A | Avoid 7318 if possible (85-90%). |
| 🇺🇸 USA | 7318.22.00.00 (Solid Steel) |
85.0% | N/A | High barrier to entry. |
| 🇨🇳 China | 8484.10.00.00 |
1-3% (Import Duty) | CCC (if applicable) | Low cost for domestic. |
| 🇪🇺 EU | 8484.10.00.00 |
0% | REACH/CE | No Section 301 equivalent. |
| 🇯🇵 Japan | 8484.10.00.00 |
0-3% | PSE (if electrical) | FTA benefits may apply. |
📌 Conclusion: - USA is the most challenging market due to Section 301 and 122 surcharges. - Composite gaskets (8484) are significantly cheaper to import into the US than solid steel washers (7318). - Structure matters: If you can design a gasket that incorporates non-metal sealing layers (e.g., graphite-filled metal jacket), you may qualify for the lower 37.5% rate instead of 85-90%.
📌 6. Common Errors & Pitfall Guide (Blood & Tears Lessons)
❌ Error 1: Declaring a Solid Steel Washer as a Composite Gasket (8484)
👉 Consequence: Customs will request a sample. If found solid, Back-duties + Penalties + possible fraud investigation. Tax difference: ~47-53%!
❌ Error 2: Declaring a Composite Gasket as a Steel Washer (7318)
👉 Consequence: You overpay taxes by ~48% unnecessarily. Profit margin evaporates.
❌ Error 3: Ignoring Threads on Metal Gaskets
👉 Consequence: Threaded steel gaskets/washers fall under 7318.22 (85%), while non-threaded fall under 7318.21 (90.8%). Small detail, big difference.
❌ Error 4: Using vague descriptions like "Gasket" on Invoice 👉 Consequence: Customs holds shipment for classification review. Delays of 7-14 days.
✅ Correct Practice:
"Metal-Jacketed Gasket, 304 Stainless Steel Outer Shell with Graphite Inner Core, 2-inch Flange Size, ASME B16.20"
🎯 7. Conclusion: Precision Classification Saves Millions!
🎯 Remember the Mantra:
🔹 "Composite is King (37.5%), Solid Steel is Death (85-90%)!" 🔹 "Check for Layers: If Graphite/Rubber is inside, claim 8484!" 🔹 "Threads change the rate: Threaded Steel (85%) vs Non-Threaded (90.8%)"
📌 Pro Tip:
- If your product is pure metal (no other material), you cannot use 8484. You must use 7318 (or 74/76 for other metals).
- Consider engineering the product: Adding a thin non-metal sealing layer (e.g., PTFE coating, graphite insert) can transform the product from a 90.8% duty item to a 37.5% duty item.
- Apply for Advance Rulings with US CBP if the composition is borderline.
📣 Immediate Action:
📞 Audit your BOM (Bill of Materials): Does the gasket contain only metal? 📄 Update Technical Drawings: Highlight composite layers if present. 🚀 Optimize Declaration: Use precise descriptions to secure the correct, lower tariff rate.
✨ Professional clearance starts with accurate classification! 💼 Your profit margin depends on the HS Code!
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) — Broad category of goods (e.g., Chapter 84: Machinery and Mechanical Appliances)
- Heading (4 digits) — More specific grouping within the chapter
- Subheading (6 digits) — Internationally standardized breakdown, used by all WCO member countries
- National subdivisions (8-10 digits) — 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 — The standard duty rate applied to WTO members
- General rate — Applied to countries without trade agreements
- Trade remedy duties — 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.