杀菌剂垫片
CN → US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 8484900000 | 37.5% | CN | US | Official Doc |
| 4016935020 | 37.5% | CN | US | Official Doc |
| 3808999501 | 40.0% | CN | US | Official Doc |
AI Analysis
🧪 Gaskets for Biocides (Pesticide/Disinfectant Related)
🌐 HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Compliance Strategy
📌 I. Product Definition and Classification: What Exactly Are "Biocide Gaskets"?
"Gaskets for Biocides" are specialized sealing components used in the handling, storage, transportation, or application of biocidal products (such as insecticides, fungicides, herbicides, and disinfectants). In international trade, these items are rarely classified by a single "Biocide" code. Instead, customs authorities classify them based on their material composition and functional nature, leading to divergent tariff outcomes.
Because these gaskets are critical safety components for hazardous chemical containers or spray equipment, they are often scrutinized for both their material (Rubber vs. Plastic) and their specific industrial application (Mechanical seal vs. Chemical container part).
⚠️ Key Distinction Point:
- If the gasket is made of vulcanized rubber and acts as a standard mechanical seal →归类 to 4016.93
- If the gasket is made of plastic and acts as a mechanical seal →归类 to 3926.90
- If the gasket is considered a part of the biocide application machinery (e.g., sprayer nozzle seal) →归类 to 8484.90
- If the gasket is viewed strictly as a accessory/component related to the chemical product itself (less common for industrial gaskets, but possible for small packings) →归类 to 3808.99
📦 II. HS Code Classification Details (2026 Latest Tariff Authority Comparison)
| HS Code | Product Description | Application Scenario | Material Basis |
|---|---|---|---|
4016.93.50.20 |
Gaskets, washers, and other seals, of vulcanized rubber other than hard rubber | Standard mechanical seals; chemical-resistant rubber gaskets for biocide tanks | ✅ Vulcanized Rubber |
3926.90.45.90 |
Other articles of plastics and articles of other materials of heading 3901 to 3914 | Plastic gaskets, O-rings, or sealing rings for chemical containers | ✅ Plastic |
8484.90.00.00 |
Parts of gaskets and similar joints of metal sheeting combined with metal or other materials only; mechanical seals | Gaskets specifically identified as parts of pneumatic, hydraulic, or mechanical equipment (e.g., sprayer pumps) | ✅ Mechanical Part |
3808.99.95.01 |
Insecticides... and other products... put up for retail sale as pesticides... or as biocides; preparations... (Includes accessories directly tied to product sale) | Rare classification: Gaskets treated as integral parts/accessories of the pesticide/biocide formulation itself | ✅ Chemical Accessory |
3808.99.95.01 |
(Duplicate Entry) | Same as above | ✅ Chemical Accessory |
🔍 Critical Note:
- 4016.93 is the most common classification for rubber gaskets, regardless of whether they touch chemicals. The key is "Vulcanized Rubber." - 3926.90 is the standard for plastic gaskets. - 8484.90 applies if the gasket is specifically sold as a replacement part for machinery (like a pump or sprayer), not just as a raw sealing component. - 3808.99 is a high-risk classification. It is typically reserved for products within the pesticide chapter. Using this for a raw gasket is unusual and may trigger intense scrutiny unless the gasket is pre-assembled into a specific biocide application device.
💰 III. 2026 Latest Tariff Rate Details (Including Surcharge & Policy Add-ons)
✅ Applicable Country: United States (US)
✅ Origin: China (CN)
✅ Effective Date: 2025-11-10 onwards (including subsequent imports)
🎯 1. 4016.93.50.20 —— Gaskets of Vulcanized Rubber
| Item | Content |
|---|---|
| Base Tariff | 2.5% (ad valorem) |
| USITC Surcharge (Section 301) | +25.0% |
| 122 Clause Tariff (IEEPA) | +10.0% |
| Total Tariff | 37.5% |
| Tax Calculation | CIF Value × 37.5% |
| De Minimis Exemption | ❌ Not Applicable (deny_de_minimis) |
| Legal Basis Path | USITC:4016.93.50.20 → FOOTNOTE:301 → IEEPA:9903.01.25 |
📌 Explanation:
- Rubber gaskets are considered industrial goods. The 25% Section 301 tariff applies to most rubber articles from China. - The 10% IEEPA tariff (122 Clause) is an additional levy on Chinese imports effective late 2025. - Total 37.5% is a significant cost burden. Misclassifying this as a "chemical part" (3808) might temporarily lower the base rate but will likely result in penalties if deemed incorrect.
🎯 2. 3926.90.45.90 —— Other Articles of Plastics
| Item | Content |
|---|---|
| Base Tariff | 3.5% (ad valorem) |
| USITC Surcharge (Section 301) | +25.0% |
| 122 Clause Tariff (IEEPA) | +10.0% |
| Total Tariff | 38.5% |
| Tax Calculation | CIF Value × 38.5% |
| De Minimis Exemption | ❌ Not Applicable |
| Legal Basis Path | USITC:3926.90.45.90 → FOOTNOTE:301 → IEEPA:9903.01.25 |
📌 Note:
- Plastic gaskets are slightly more expensive in base duty (3.5% vs 2.5%) compared to rubber. - The total effective tariff is 38.5%, which is the highest among mechanical/plastic classifications in this dataset. - Ensure the plastic material is clearly defined (e.g., PTFE, Nitrile, EPDM) to avoid disputes under "Other plastics."
🎯 3. 8484.90.00.00 —— Parts of Gaskets for Machinery
| Item | Content |
|---|---|
| Base Tariff | 2.5% (ad valorem) |
| USITC Surcharge (Section 301) | +25.0% |
| 122 Clause Tariff (IEEPA) | +10.0% |
| Total Tariff | 37.5% |
| Tax Calculation | CIF Value × 37.5% |
| De Minimis Exemption | ❌ Not Applicable |
| Legal Basis Path | USITC:8484.90.00.00 → FOOTNOTE:301 → IEEPA:9903.01.25 |
📌 Warning:
- Although the rate is similar to rubber gaskets (37.5%), the risk profile is higher. Customs may argue that a simple gasket is not a "part of machinery" unless it is sold specifically as a spare part for a known machine model. - If the gasket is generic, 4016.93 or 3926.90 is safer and more defensible.
🎯 4. 3808.99.95.01 —— Biocides and Accessories
| Item | Content |
|---|---|
| Base Tariff | 5.0% (ad valorem) |
| USITC Surcharge (Section 301) | +25.0% |
| 122 Clause Tariff (IEEPA) | +10.0% |
| Total Tariff | 40.0% |
| Tax Calculation | CIF Value × 40.0% |
| De Minimis Exemption | ❌ Not Applicable |
| Legal Basis Path | USITC:3808.99.95.01 → FOOTNOTE:301 → IEEPA:9903.01.25 |
📌 Critical Alert:
- This classification has the HIGHEST TOTAL TARIFF (40.0%) in the provided data. - Why? While the base duty is higher (5%), the surcharges are the same. - Recommendation: Avoid using 3808.99.95.01 for generic gaskets unless you are importing pre-assembled biocide application devices. Using this code for raw gaskets is legally tenuous and financially costly.
🛠️ IV. Customs Clearance Practical Advice (实战避坑指南)
✅ 1. Preparation Checklist (Non-Negotiable)
| Document | Required? | Description |
|---|---|---|
| ✅ Product Specifications | ✔️ | Must specify material (e.g., "Vulcanized Nitrile Rubber" or "PTFE Plastic"), hardness, and chemical resistance. |
| ✅ Material Safety Data Sheet (MSDS/SDS) | ✔️ | Proves the gasket material is compatible with biocides but does not contain hazardous chemicals itself. |
| ✅ Product Photos | ✔️ | Clear images showing the gasket shape (O-ring, flat washer, custom cut) and any markings. |
| ✅ Commercial Invoice | ✔️ | Must NOT describe as "Biocide" or "Pesticide." Use "Sealing Gasket for Chemical Equipment." |
| ✅ HS Code Justification | ✔️ | A brief memo explaining why HS 4016 or 3926 was chosen over 3808 (i.e., it's a mechanical seal, not a chemical product). |
| ✅ Packing List | ✔️ | Separate line item for gaskets if mixed with other goods. |
✅ 2. Declaration Tips (Key Mantras)
🔥 "Material Dictates Code, Not Application!"
- Do NOT declare as "Biocide Part" (3808) unless specifically required. It carries a higher total tax (40%). - DO declare based on material: - Rubber → 4016.93.50.20 (37.5%) - Plastic → 3926.90.45.90 (38.5%) - Machinery Part → 8484.90.00.00 (37.5%) — Use with caution.
| Situation | Correct Declaration | Wrong Practice |
|---|---|---|
| Rubber Gaskets for Chemical Tanks | 4016.93.50.20 |
Misclassified as 3808 → 40% Tax (Loss of 2.5%) |
| Plastic O-Rings for Sprayers | 3926.90.45.90 |
Misclassified as 8484 → Potential Rejection if not machine-specific |
| Gaskets sold as "Accessories to Biocide Kit" | 3808.99.95.01 |
Only if integral to the kit; otherwise, split invoice and classify gaskets separately. |
✅ 3. Special Case Handling
| Scenario | Handling Advice |
|---|---|
| Mixed Material Gaskets | If a gasket has a rubber core and plastic coating, classify based on the essential character (usually the rubber layer). |
| Pre-assembled into Biocide Pump | If the gasket is already installed in a pump for sale, declare the pump (likely 8413 or 8424), not the gasket separately. |
| Custom Cut Gaskets | Still falls under 4016 or 3926. Provide drawings to prove they are "prepared for use" as seals. |
| High-Value PTFE Gaskets | Even if plastic, PTFE gaskets for chemical use are still 3926.90.45.90. Do not try to force them into 3926.49 without proper legal basis. |
🌍 V. Global Market Clearance Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Tariff (China Origin) | Certification | Notes |
|---|---|---|---|---|
| 🇺🇸 USA | 4016.93.50.20 (Rubber) |
37.5% (301+IEEPA) | No special cert | High tariff risk. Use 3808 only if strictly applicable. |
| 🇺🇸 USA | 3926.90.45.90 (Plastic) |
38.5% (301+IEEPA) | No special cert | Highest base duty among mechanical gaskets. |
| 🇪🇺 EU | 4016.93 (Rubber) |
0% (Most FTA) | REACH Compliance | Low risk if REACH compliant. |
| 🇬🇧 UK | 4016.93 (Rubber) |
0% (if UK-GCC applied) | UKCA | Post-Brexit rules apply. |
| 🇨🇳 China | 4016.93 (Rubber) |
7.5% | No surcharge | Lower cost if importing INTO China. |
📌 Conclusion:
- The USA imposes heavy surcharges on all gasket types from China (25% + 10%). - 3808.99.95.01 is the most expensive option (40%) and should be avoided for generic gaskets. - Rubber gaskets (4016.93) offer the lowest total cost (37.5%) among the mechanical classifications.
📌 VI. Common Mistakes & Pitfalls (Lessons from Experience)
❌ Mistake 1: Declaring gaskets as "Parts of Biocide Containers" (3926.90.80)
👉 Consequence: Customs may reclassify to 3808.99.95.01 due to "chemical association," resulting in a 2.5% penalty (40% vs 37.5%).
❌ Mistake 2: Ignoring the Material Composition
👉 Consequence: If you declare "Plastic" but the sample is "Rubber," the shipment may be seized or fined for misdeclaration.
❌ Mistake 3: Using "Biocide" in the Description for Raw Gaskets
👉 Consequence: Triggers 3808 classification pathway → Higher Tax (40%).
👉 Fix: Use "Industrial Gasket," "Sealing Washer," or "O-Ring" in the description.
❌ Mistake 4: Assuming De Minimis Exemption
👉 Consequence: No exemption for any of these codes. All shipments >$800 are fully taxed.
✅ Correct Practice:
"Vulcanized Rubber Gaskets, Chemical Resistant, For Industrial Use, Model G-100, Not for Retail Sale as Pesticide"
🎯 VII. Conclusion: Precision Classification for Cost Efficiency
🎯 Remember the Mantra:
🔹 "Material First, Application Second. Rubber to 4016, Plastic to 3926. Avoid 3808 unless Integral!"
🔹 "3808 is a Trap for Gaskets: 40% Tax vs 37.5%. Save 2.5% by being Honest!"
📌 Pro Tip:
If your gaskets are made of specialty plastics (e.g., PTFE/Teflon), ensure they are clearly described to avoid being miscategorized under "general plastics" which may have different sub-rate nuances. Always request a Pre-Ruling (Advance Ruling) from US Customs if the value is high, to lock in the 4016.93.50.20 or 3926.90.45.90 classification.
📣 Immediate Action:
📞 Contact your customs broker with Material Specs (Rubber vs. Plastic)
🚀 Declare as Industrial Gasket, not Biocide Accessory, to save up to 2.5% on every shipment.
💼 Your every dollar of tariff cost matters!
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.