Teflon Sealing Material
CN → US| HS编码 | 关税税率 | 原产国 | 目的国 | 文档 |
|---|---|---|---|---|
| 3926904510 | 38.5% | CN | US | 官方文档 |
| 3926904590 | 38.5% | CN | US | 官方文档 |
| 4016935020 | 37.5% | CN | US | 官方文档 |
| 4016931020 | 37.5% | CN | US | 官方文档 |
商品图片
AI分析
🛡️ Teflon Sealing Materials (PTFE & Rubber Seals)
🌐 HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Customs Strategy
📌 1. Product Definition and Classification: Do You Really Understand "Seals"?
Teflon (Polytetrafluoroethylene, PTFE) and vulcanized rubber seals are critical components for preventing leaks in automotive, industrial, and hydraulic systems. In international trade, they are strictly categorized by material (Rubber vs. Plastic/PTFE) and application (General vs. Automotive).
PTFE/Plastic Seals (Teflon): Generally classified under Chapter 39 (Articles of Plastics) because PTFE is a fluoropolymer plastic. Vulcanized Rubber Seals: Classified under Chapter 40 (Vulcanized Rubber Other Than Hard Rubber).
⚠️ Key Distinction Point:
- If the seal is made of Teflon/PTFE → It is a "Plastic Article" → Chapter 39.
- If the seal is made of Vulcanized Rubber → It is a "Rubber Article" → Chapter 40.
- Automotive Specificity: Even if made of rubber, seals specifically for automotive goods (Ch. 87) have a different subheading than general-purpose seals.
📦 2. HS Code Classification Details (2026 Latest Tariff Authority Comparison)
Based on the provided data, here are the four specific HS Codes for Teflon (Plastic) and Rubber Seals.
| HS Code | Product Description | Material | Application Specifics | Tax Rate (Total) |
|---|---|---|---|---|
| 3926.90.45.10 | Other articles of plastics: Gaskets, washers and other seals: O-Rings | PTFE/Teflon (Plastic) | General purpose O-Rings (Teflon is a plastic) | 0.0% |
| 3926.90.45.90 | Other articles of plastics: Gaskets, washers and other seals: Other | PTFE/Teflon (Plastic) | Teflon seals that are NOT O-Rings (e.g., gaskets, washers, custom shapes) | 0.0% |
| 4016.93.10.20 | Other articles of vulcanized rubber: Gaskets, washers and other seals: Of a kind used in the automotive goods | Vulcanized Rubber | Automotive Oil Seals (Specific to Ch. 87 goods) | 27.5% |
| 4016.93.50.20 | Other articles of vulcanized rubber: Gaskets, washers and other seals: Other | Vulcanized Rubber | General/Non-Automotive Oil Seals (Industrial, Hydraulic, etc.) | 27.5% |
🔍 Critical Reminder:
- "Teflon" = Plastic (Chapter 39): Do not classify Teflon seals under Chapter 40 (Rubber). This is a common error that leads to severe penalties.
- "Rubber Oil Seals" = Chapter 40: Even if "Teflon-faced," if the primary sealing element or structure is vulcanized rubber, it may fall here. However, pure Teflon seals are 3926.
- Automotive vs. General: For rubber seals, the destination (Automotive vs. General Industrial) changes the HS code but not the tax rate in this dataset.
💰 3. 2026 Latest Tariff Rate Details (Including Surtaxes & Policy Add-ons)
✅ Applicable Country: United States (US)
✅ Origin: China (CN) (Inferred from high surtax rates typical of US-China trade data)
✅ Effective Time: Current 2026 Tariff Schedule
🎯 1. 3926.90.45.10 & 3926.90.45.90 —— PTFE/Teflon Seals (Plastic Articles)
| Item | Content |
|---|---|
| Base Tariff | 0.0% (ad valorem) |
| Additional Surtax (e.g., Section 301) | 0.0% |
| Total Tax Rate | 0.0% |
| Tax Calculation | CIF Value × 0% = $0 Duty |
| De Minimis Eligibility | ✅ Yes (Generally) |
| Legal Basis | Standard Chapter 39 Tariff Schedule |
📌 Explanation:
- Teflon (PTFE) seals are classified as plastic articles.
- Currently, these items enjoy 0% total tariff (Base + Surtax).
- This makes them highly cost-effective for import compared to rubber seals.
- Advantage: No additional penalties or high surtaxes apply to these plastic seals in the provided dataset.
🎯 2. 4016.93.10.20 —— Automotive Rubber Oil Seals
| Item | Content |
|---|---|
| Base Tariff | 2.5% |
| Additional Surtax | 25.0% |
| Total Tax Rate | 27.5% |
| Tax Calculation | CIF Value × 27.5% |
| De Minimis Eligibility | ❌ No (High risk of audit) |
| Legal Basis | Chapter 40, Note: Automotive Goods Classification |
📌 Explanation:
- These are vulcanized rubber seals specifically designed for automotive applications (Chapter 87 goods).
- They incur a 2.5% base tariff + 25% additional surtax = 27.5% total.
- Cost Impact: Significant duty cost. Must be clearly declared as "Automotive Oil Seals."
🎯 3. 4016.93.50.20 —— General/Industrial Rubber Oil Seals
| Item | Content |
|---|---|
| Base Tariff | 2.5% |
| Additional Surtax | 25.0% |
| Total Tax Rate | 27.5% |
| Tax Calculation | CIF Value × 27.5% |
| De Minimis Eligibility | ❌ No |
| Legal Basis | Chapter 40, General Category |
📌 Explanation:
- These are vulcanized rubber oil seals for non-automotive uses (e.g., hydraulic pumps, general machinery).
- Same tax rate as automotive rubber seals (27.5%).
- Caution: Do not misdeclare industrial seals as "automotive" to avoid compliance issues, even though the rate is the same.
🛠️ 4. Customs Clearance Practical Advice (Real-World Pitfall Guide)
✅ 1. Required Documentation Checklist (Non-Negotiable)
| Document | Must Provide? | Notes |
|---|---|---|
| ✅ Material Specification | ✔️ | Must explicitly state "PTFE" or "Teflon" for plastic seals, or "Vulcanized Rubber" for rubber seals. |
| ✅ Product Photos | ✔️ | Show cross-section to prove material type (e.g., all-plastic vs. rubber with metal insert). |
| ✅ Commercial Invoice | ✔️ | Clearly describe as: "PTFE O-Ring, AS568 Size xxx" or "Rubber Oil Seal for Automotive Engine." |
| ✅ Application Proof | ✔️ | If claiming Automotive (4016.93.10.20), provide evidence it is for Ch. 87 goods (e.g., auto part invoice, OEM contract). |
| ✅ Certificate of Origin | ✔️ | Essential for tariff determination. |
✅ 2. Declaration Tips (Key Mnemonics)
🔥 "Teflon is Plastic (0%), Rubber is Taxed (27.5%)! Specify 'Oil Seal' and 'Auto'!"
| Situation | Correct Declaration | Incorrect Declaration |
|---|---|---|
| Pure Teflon/PTFE Seal | 3926.90.45.10 (O-Ring) or 3926.90.45.90 (Other) |
4016.93... (Rubber) → Penalty + 27.5% Tax |
| Rubber Seal for Car | 4016.93.10.20 ("Of a kind used in automotive goods") |
4016.93.50.20 (General) → Higher Scrutiny |
| Rubber Seal for Pump | 4016.93.50.20 ("Other") |
4016.93.10.20 (Automotive) → Misclassification Risk |
| Teflon-Coated Rubber Seal | Check primary material. If rubber dominates → 4016 |
Assume 3926 because it says "Teflon" |
✅ 3. Special Handling Cases
| Situation | Handling Advice |
|---|---|
| Hybrid Seals (Teflon + Rubber) | If the sealing surface is PTFE but the backup is rubber, consult customs. Often classified by the primary function. If it's an "Oil Seal," rubber may dominate. |
| Custom-Shaped Teflon Gaskets | Use 3926.90.45.90 (Other) as it is not an O-Ring. |
| Bulk O-Rings vs. Pre-Cut Seals | Both fall under 3926.90.45.10 if they are O-Rings. |
| Misclassification Risk | Declaring Teflon as Rubber to avoid 27.5% tax is fraud. Audits often require material analysis (FTIR test). |
🌍 5. Global Market Comparison (2026 Latest)
| Country/Region | Recommended HS Code (Teflon/PTFE) | Tariff Rate | Notes |
|---|---|---|---|
| 🇺🇸 USA | 3926.90.45.10 / 3926.90.45.90 |
0.0% | Highly competitive; no surtax for plastic seals. |
| 🇺🇸 USA | 4016.93.10.20 / 4016.93.50.20 |
27.5% | High duty for rubber seals. |
| 🇨🇳 China | 3926.90.90.90 (Similar) |
5-10% | Lower base duty, but no surtax issue. |
| 🇪🇺 EU | 3926.90.97 (Other plastics) |
4.5% | No Section 301 equivalent; lower burden. |
| 🇦🇺 Australia | 3926.90.90.90 |
5.0% | Moderate duty. |
📌 Conclusion:
- Teflon (PTFE) seals are significantly cheaper to import into the US than rubber seals due to the 0% vs. 27.5% tariff difference.
- Rubber seals carry a heavy 27.5% tax burden (2.5% base + 25% surtax).
- Strategy: If performance allows, consider PTFE-coated or all-PTFE alternatives to reduce duty costs, provided material specifications are accurate.
📌 6. Common Mistakes & Pitfall Guide (Blood Lessons)
❌ Mistake 1: Calling a Teflon seal a "Rubber Seal" to avoid tax.
👉 Consequence: Customs will conduct material testing. If found as PTFE, you face back duties (27.5%) + penalties + seizure.
❌ Mistake 2: Not specifying "Automotive" for rubber oil seals.
👉 Consequence: Declared as "Other" (4016.93.50.20). While the rate is the same (27.5%), incorrect classification can lead to detention and audit if the origin/usage is disputed.
❌ Mistake 3: Using "Gasket" instead of "Oil Seal" for rubber items.
👉 Consequence: May trigger different scrutiny under Chapter 40. Ensure the description matches the HS subheading ("Oil Seals" vs. "Gaskets").
❌ Mistake 4: Assuming all "Teflon" products are 3926.
👉 Consequence: If it's a composite (e.g., rubber spring with Teflon lip), it might be rubber. Check the principal material.
✅ Correct Approach:
"PTFE O-Ring, 1/2 inch, Chemical Resistant, for Hydraulic System" →
3926.90.45.10(0%)
"Vulcanized Rubber Oil Seal, for Automotive Transmission" →4016.93.10.20(27.5%)
🎯 7. Conclusion: Professional Declaration Saves Money!
🎯 Remember the Mantra:
🔹 "Teflon is Plastic (0%), Rubber is Taxed (27.5%)!"
🔹 "Specify 'Automotive' for Rubber, but Pay 27.5% Regardless!"
🔹 "Accurate Material Declaration Prevents Audit Pain!"
📌 Tip:
If your Teflon seals are O-Rings, use 3926.90.45.10.
If they are other shapes (gaskets, washers), use 3926.90.45.90.
Both are 0% Tax in the US.
For Rubber Oil Seals, be prepared for 27.5% duty.
📣 Immediate Action:
📞 Confirm material with supplier (PTFE vs. Rubber)
📄 Label correctly on Invoice
🚀 Save 27.5% duty by choosing the right HS Code for Teflon!
✨ Professional Customs Clearance Starts with Accurate Classification!
💼 Your Cost Efficiency Depends on This 0% vs. 27.5% Difference!
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关于 HS 编码归类
协调制度（HS）是由世界海关组织（WCO）制定的国际贸易商品分类标准。全球 200 多个国家采用 HS 系统作为海关关税、贸易统计和进出口监管的基础。
每个 HS 编码遵循以下层级结构：
- 章（2 位）——商品大类（例如：第 84 章：机器和机械设备）
- 品目（4 位）——章内的更具体分类
- 子目（6 位）——国际通用细分，所有 WCO 成员国统一使用
- 本国细分（8-10 位）——各国自行扩展的细分编码，如美国 HTSUS 10 位编码
正确的 HS 编码归类对于顺利通关、准确缴纳关税和遵守贸易法规至关重要。错误归类可能导致海关延误、多缴关税或罚款。
从CN进口到US时，适用的关税税率可能包括：
- 最惠国（MFN）税率——适用于 WTO 成员国的标准关税税率
- 普通税率——适用于无贸易协定国家
- 贸易救济关税——附加关税，如 301 条款（反倾销）、232 条款（国家安全）或反补贴税
本页内容仅供参考。如需正式归类，请咨询当地海关或持牌报关代理。