graphite sealant
CN β US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 3926909989 | 22.8% | CN | US | Official Doc |
| 6815190000 | 35.0% | CN | US | Official Doc |
| 8484900000 | 37.5% | CN | US | Official Doc |
| 8484100000 | 37.5% | CN | US | Official Doc |
| 6815994110 | 35.0% | CN | US | Official Doc |
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π₯οΈ Graphite Sealant (Carbon-Based Sealing Materials)
π HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Full Analysis | Professional Clearance Strategy
π I. Product Definition & Classification: Do You Really Understand "Graphite Sealant"?
Graphite sealant, in the context of international trade and tariff classification, typically refers to pre-formed graphite gaskets, graphite packing, or carbon-based sealing rings used in high-temperature, high-pressure industrial applications (e.g., petrochemical, power generation, automotive). It is distinct from liquid sealants or adhesives.
In international trade, it is categorized into two main types:
1. Raw Graphite/Carbon Articles (Unworked or Simply Processed): * Description: Graphite blocks, rods, sheets, or powder that have not yet been formed into specific sealing shapes or integrated with other materials. * Key Feature: No binding agents, no specific sealing geometry.
2. Finished Graphite Gaskets/Packing (Worked/Crafted): * Description: Pre-formed rings, flat gaskets, or braided packing made of graphite, often bound with stainless steel cores, ceramic fibers, or other materials to maintain shape under pressure. * Key Feature: Specific sealing dimensions, often composite structures (e.g., graphite with metal core).
β οΈ Key Distinction Point: * If it is raw graphite powder, blocks, or simple sheets β Classified under Chapter 68 (Articles of stone or other non-metallic mineral substances). * If it is a composite gasket (e.g., graphite + metal core) β Often classified under Chapter 84 (Machinery parts) or Chapter 68 depending on the predominant material. * If it is a liquid/paste sealant containing graphite β Classified under Chapter 35 or Chapter 38 (Preparations for industrial use).
π¦ II. HS Code Classification Details (2026 Latest Tariff Authority Comparison)
| HS Code | Product Description | Application Scenario | Material Composition | Binding Agent? |
|---|---|---|---|---|
6815.99.90.00 |
Other articles of stone or other non-metallic mineral substances, n.e.s. | Raw graphite blocks, rods, sheets, or simple graphite shapes. | Pure graphite or mixed with binders but not formed into specific seals. | β No / Minimal |
6815.99.41.10 |
Other articles of carbon, n.e.s. (Specific sub-category in some jurisdictions) | High-purity graphite sealing rings, simple carbon packing. | Pure carbon/graphite. | β No |
8484.90.00.00 |
Parts of machinery for mechanical handling, n.e.s. | Composite graphite gaskets with metal cores, used specifically in engines, pumps, valves. | Graphite + Stainless Steel (metal core). | β Yes (Composite) |
8484.10.00.00 |
Gaskets and similar joints of metal sheeting combined with sheeting of other materials only | Metal-combined gaskets (e.g., PTFE/metal, but sometimes graphite/metal is argued here if graphite is minor). | Metal + Graphite (if metal is predominant). | β Yes |
3506.91.90.00 |
Adhesives prepared for industrial use, n.e.s. | Graphite-based liquid sealants, pastes, or creams for sealing flanges. | Graphite powder suspended in resin/oil. | β Yes (Liquid/Paste) |
π Key Reminder: * All solid, pre-formed graphite gaskets/packing must be classified under Chapter 68 (
6815.99.90.00or6815.99.41.10) unless they are clearly defined as composite parts of machinery under Chapter 84 (8484.90.00.00). * If the graphite is combined with a metal core (e.g., spiral wound gaskets with graphite fill), classification can be contentious. Often, if the graphite is the filling and the metal is the structure, it may fall under8484.90.00.00. However, pure graphite sheets/rings are6815. * Liquid graphite sealants are3506or3824, not solids.
π° III. 2026 Latest Tariff Rate Detailed Explanation (Including Surtaxes, Policy Add-ons)
β Applicable Country: United States (US) β Origin: China (CN) β Effective Date: November 10, 2025 (Including subsequent imports)
π― 1. 6815.99.90.00 ββ Articles of Stone/Non-Metallic Mineral (Raw/Simple Graphite)
| Item | Content |
|---|---|
| Base Tariff | 0% (ad valorem) |
| USITC Surtax | +25% (From USITC Footnote 9903.88.01) |
| IEEPA Surtax | +10% (For China/HK products, from Nov 10, 2025) |
| Total Tariff | 45% |
| Tax Calculation | CIF Value Γ 45% |
| De Minimis Exemption | β Not Eligible (deny_de_minimis) |
| Legal Basis Path | IEEPA:9903.01.25 β IEEPA:9903.01.24 β USITC:6815.99.90.00 β FOOTNOTE:9903.88.01 |
π Explanation: * "USITC Surtax 25%" comes from the "Additional Tariffs" under Section 301 of the US Trade Act; * "IEEPA 10%" is the added tariff on China for international emergency economic powers; * Total 45%, which is a very high tariff, must be anticipated in advance!
π― 2. 8484.90.00.00 ββ Parts of Machinery (Composite Graphite Gaskets)
| Item | Content |
|---|---|
| Base Tariff | 0% (Many machinery parts are duty-free) |
| USITC Surtax | +25% (If classified under 301 list, which many industrial parts are) |
| IEEPA Surtax | +10% |
| Total Tariff | 45% (Likely) |
| Tax Calculation | CIF Γ 45% |
| De Minimis Exemption | β Not Eligible |
| Legal Basis Path | IEEPA:9901.25 β IEEPA:9903.01.24 β USITC:8484.90.00.00 β FOOTNOTE:9903.88.01 |
π Note: * Composite gaskets are often scrutinized. If the graphite is the primary function, customs may still push for
6815. If it's a mechanical part of a pump/valve,8484is used. * Both categories currently attract high surtaxes for Chinese origin.
π οΈ IV. Customs Clearance Practical Advice (Combat Pitfall Avoidance Guide)
β 1. Prepare Material Checklist (Nothing is optional)
| Material | Must Provide | Description |
|---|---|---|
| β Product Specification Sheet | βοΈ | Includes dimensions, density, purity, pressure/temp ratings. |
| β Product Photos (Including Nameplate) | βοΈ | Clear view of shape, core (if any), and packaging. |
| β Third-Party Test Report | βοΈ | ASTM D5332 (Graphite Gaskets), RoHS, REACH. |
| β Commercial Invoice | βοΈ | Clearly state "Graphite Gasket" or "Graphite Packing", NOT "Sealant Paste" if solid. |
| β Certificate of Origin (CO) | βοΈ | If not Chinese origin, can claim preferential rates. |
| β Packing List | βοΈ | Clarify if shipped with tools or packaging. |
β 2. Declaration Skills (Key Mnemonic)
π₯ "Solid Graphite β Ch 68, Composite Gasket β Ch 84, Liquid Paste β Ch 35/38, Name Precise, Tariff Down!"
| Situation | Correct Declaration Method | Wrong Practice |
|---|---|---|
| Solid Graphite Ring/Packing | 6815.99.90.00 |
Misdeclare as "Machinery Part" β Unjustified delay |
| Graphite Gasket with Metal Core | 8484.90.00.00 (Argue) |
Misdeclare as "Raw Material" β 45% vs. potential 0% base (but still surtaxed) |
| Liquid Graphite Sealant | 3506.91.90.00 or 3824.99.99 |
Misdeclare as "Solid Gasket" β 100% error risk |
| Industrial Instrument | 9013.80.91.00 |
Misdeclare as "Graphite" β 32% |
β 3. Special Situation Handling
| Situation | Handling Advice |
|---|---|
| OEM Custom Graphite Gaskets | Provide client order + design drawings to avoid "non-standard" classification. |
| Graphite with PTFE/PTFE Coated | Declare as "Composite Gasket", provide material breakdown ratio. |
| Graphite for Medical Devices | If special purpose, apply for "Non-Industrial Use" exemption, but need proof. |
| Graphite for Military/Aerospace | Apply for "Special Use" declaration, tax rate may be lower, communicate in advance. |
π V. Global Major Market Customs Clearance Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Tariff | Certification Requirements | Notes |
|---|---|---|---|---|
| πΊπΈ USA | 6815.99.90.00 / 8484.90.00.00 |
25% (Surtax) + 10% (IEEPA) | FCC (if electronic), RoHS, REACH | 45% Total for CN Origin |
| π¨π³ China | 6815.99.90.00 |
5-8% | CCC (if applicable), RoHS | No additional surtax |
| πͺπΊ EU | 6815.99.90.00 |
0-3% (If free trade) | CE, REACH | No surtax |
| π¦πΊ Australia | 6815.99.90.00 |
5% | RCM | No surtax |
| π―π΅ Japan | 6815.99.90.00 |
0-5% | PSE | No surtax |
π Conclusion: * USA is the only market that adds high surtaxes on graphite products; * Chinese-origin graphite products in the US have extremely high clearance costs, suggesting early evaluation of production relocation or supply chain adjustment.
π VI. Common Errors & Pitfall Avoidance Guide (Blood and Tears Lessons)
β Error 1: Mixing "Solid Graphite Gasket" with "Liquid Graphite Paste" in one shipment. π Consequence: Customs will inspect each item separately. Liquid may be seized if not declared correctly β Delay + Fine!
β Error 2: Declaring "Graphite" as "Metal Part" π Consequence: Wrong chapter classification β 100% compliance risk β Return Shipment!
β Error 3: Not providing material composition for composite gaskets. π Consequence: Customs cannot determine if it's Ch 68 or Ch 84 β Delay in release or retroactive tax assessment.
β Error 4: Using "Sealant" as a generic name for solid gaskets. π Consequence: Customs may classify as "Adhesive" (Ch 35/38) or "Rubber" (Ch 40) β Wrong tariff β Back-tax + Penalty!
β Correct Practice:
"Graphite Gasket, Flat, 12" x 12" x 1/8", Pure Graphite, No Metal Core, Model XYZ, ASTM D5332 Certified"
π― VII. Conclusion: Professional Declaration, Save Time, Save Money, Increase Efficiency!
π― Remember the Mnemonic:
πΉ "Solid Graphite β Ch 68, Composite β Ch 84, Liquid β Ch 35, Name Precise, Tariff Down!" πΉ "HS Code Determines Life, Tariff Differs by 25 Points, One Declaration Step Away, Back-Tax Thousands!"
π Small Tip: If your graphite products are originating from Vietnam, Mexico, Thailand, Malaysia, you can apply for IEEPA Exemption, and the tariff is only 0%~5%; Suggest Applying for Advance Ruling (Advance Ruling) in advance to avoid clearance risks.
π£ Take Action Immediately:
π Contact Professional Customs Broker + Provide Product Photos + Apply for HS Code Advance Ruling π Let your graphite products, Smooth Clearance, Efficient Global Export, Profit Doubled!
β¨ Professional Clearance, Starts with Accurate Classification! πΌ Every Cent of Your Cost Deserves to be Precisely Calculated!
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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.