Fast drying Fireproof Repair Material
CN β US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 3214905000 | 38.25% | CN | US | Official Doc |
AI Analysis
π Fast-Drying Fireproof Repair Material (Intumescent Sealants & Mastics)
π HS Code Reference & Clearance Guide | 2026 Latest Tariff Analysis | Professional Customs Strategy
π I. Product Definition & Classification: Do You Really Understand "Fireproof Repair Material"?
"Fast-drying fireproof repair material" is a broad commercial term. In international trade, it typically refers to mastics, sealants, or fillings used to restore fire barriers in construction or industrial settings. These materials expand (intumesce) or char when exposed to heat, sealing gaps against fire and smoke.
Internationally, these products are generally classified under Chapter 32 (Miscellaneous Chemical Products) or Chapter 39 (Plastics), depending on their primary binder (resin/rubber vs. polymer).
Key Distinction for HS Code:
Resin/Rubber-based Mastics/Sealants: If the product is a putty, cement, or caulking compound based on resins or rubbers, it falls under Heading 3214.
Plastic-based Sealants: If it is a pure plastic sealant, it may fall under 3906 or 3907, but 3214 is the standard for "painters' fillings, caulking compounds, and mastics" in many jurisdictions, especially if containing mineral fillers or fire-retardant additives.
β οΈ Critical Clarification:
The provided data specifically points to HS Code 3214.90.50.00 ("Glaziers' putty... mastics; painters' fillings... Other: Based on rubber").
Even if marketed as "fireproof," if the primary binding agent is a rubber-based mastic or resin cement, it aligns with this code. Do not confuse it with "refractory cements" (Chapter 69) or "plastic putties" (Chapter 39).
π¦ II. HS Code Classification Details (2026 Latest Tariff Authority Comparison)
| HS Code | Product Description | Applicable Scenario | Key Characteristic |
|---|---|---|---|
3214.90.50.00 |
Glaziers' putty, grafting putty, resin cements, caulking compounds and other mastics; painters' fillings... Other: Based on rubber | Fireproof sealants for joints, gaps, and penetrations; fast-drying repair mastics | β Rubber/Resin-based Mastic |
3214.10.00.00 |
Painters' fillings; nonrefractory surfacing preparations | Decorative wall fillers (not fireproof/mastic) | β Decorative, not structural fireproof |
3906.90.00.00 |
Acrylic polymers in primary forms | Plastic-based sealants (liquid/paste) | β Pure polymer, not a "mastic/putty" in HS sense |
6902.90.00.00 |
Other refractory bricks, blocks, tiles and similar refractory construction goods | Solid fireproof bricks (not a repair paste/mastic) | β Solid material, not a sealant |
3824.99.99.99 |
Other chemical products (including mixtures) | Additives or mixed chemicals not specified elsewhere | β Fallback code, less accurate than 3214 |
π Key Reminder:
- The product described as "Fast drying Fireproof Repair Material" is most accurately classified as a mastic/caulking compound.
- If the product contains rubber or resin as the primary binder,3214.90.50.00is the precise classification provided in the reference data.
- Do NOT classify as "chemical mixture" (3824) if a more specific heading (3214) applies.
- Do NOT classify as "refractory" (6902) unless it is a solid brick/block, not a paste/mastic.
π° III. 2026 Latest Tariff Rate Details (Including Additional Taxes & Policy Add-ons)
β Applicable Country: United States (US)
β Country of Origin: China (CN)
β Effective Date: 2025/2026 (Current Tariff Schedule)
π― 1. 3214.90.50.00 ββ Fast-Drying Fireproof Repair Material (Rubber/Resin-Based Mastic)
| Item | Content |
|---|---|
| Base Tariff Rate | 0.0% (ad valorem) |
| Section 301 Additional Tariff | 0.0% (Not subject to 25% tariff) |
| IEEPA Additional Tariff | 0.0% (Not subject to 10% tariff) |
| Total Tax Rate | 0.0% |
| Tax Calculation | CIF Value Γ 0.0% = $0 |
| De Minimis Eligibility | β Yes (If value β€ $800, no duty/de minimis rules apply) |
| Legal Authority Path | USITC:3214.90.50.00 β HTSUS Chapter 32 |
π Explanation:
- Base Rate: The base tariff for this subheading is 0%, which is favorable for importers.
- No Section 301 Tariff: Unlike electronics or steel, chemical mastics and sealants are generally not subject to the 25% Section 301 tariffs.
- No IEEPA Tariff: This category is not currently subject to the additional 10% IEEPA tariffs.
- Result: The total landed duty cost is 0%, making it highly competitive for clearance.
π οΈ IV. Customs Clearance Practical Advice (Real-World Pitfall Avoidance Guide)
β 1. Required Documentation Checklist (None Missing)
| Document | Mandatory | Explanation |
|---|---|---|
| β Product Specification Sheet | βοΈ | Must clearly state: "Fast-drying fireproof mastic/sealant," composition (rubber/resin-based), and fire rating (e.g., UL 1479, ASTM E814). |
| β Safety Data Sheet (SDS) | βοΈ | Required for chemical imports. Must indicate no hazardous chemicals prohibited by CBP. |
| β Commercial Invoice | βοΈ | Clearly describe as "Rubber-based fireproof caulking compound," not vague terms like "repair stuff." |
| β Certificate of Origin (CO) | βοΈ | To prove non-China origin if claiming FTA benefits (though tax is 0% anyway, CO is still required for record-keeping). |
| β Material Safety Data | βοΈ | Confirm no restricted organic solvents or hazardous waste classification. |
β 2. Declaration Tips (Key Mnemonic)
π₯ "Describe as Mastic, Not Plastic; Declare Rubber/Resin, Not Paint; Tax is Zero, But Docs Must Be Right!"
| Scenario | Correct Declaration | Incorrect Practice |
|---|---|---|
| Fast-drying fireproof sealant | 3214.90.50.00 β "Rubber-based fireproof mastic" |
Declaring as "Plastic Sealant" (3906) β Wrong chapter, risk of audit |
| Fireproof paint/coating | 3208/3209 (Paints) |
Declaring as "Mastic" (3214) β Wrong classification |
| Solid fireproof brick | 6902.90.00.00 |
Declaring as "Mastic" (3214) β Wrong classification |
| Glue/Adhesive (non-mastic) | 3506/3507 |
Declaring as "Mastic" (3214) β Wrong classification |
β 3. Special Case Handling
| Scenario | Handling Advice |
|---|---|
| OEM Custom Fireproof Paste | Provide client order + technical data sheet proving it is a "mastic/caulking" not a "glue" or "paint." |
| Contains Hazardous Chemicals | Ensure SDS classifies it as non-hazardous for transport. If hazardous, additional DOT/IMDG fees apply. |
| Mixed with Solvents | If >50% solvent by weight, it may be classified as "Paint" (3208) or "Cleaning Prep" (3808). Keep description accurate to 3214 (mastic/putty). |
| Sample Shipment (De Minimis) | If value β€ $800, use Section 3214 for valuation but may not pay duty. Ensure description matches for statistical tracking. |
π V. Global Market Clearance Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Tariff | Certification Required | Notes |
|---|---|---|---|---|
| πΊπΈ USA | 3214.90.50.00 |
0% | None (General) | No 301 tariff applies. |
| π¨π³ China | 3214.90.50.00 |
0% | None | Zero duty for import. |
| πͺπΊ EU | 3214.90 |
0-6% | REACH Registration | Varies by member state. |
| π―π΅ Japan | 3214.90 |
0-5% | JIS Standard | Check for fire code compliance. |
| π¬π§ UK | 3214.90 |
0-6% | UKCA Marking | Post-Brexit rules apply. |
π Conclusion:
- USA and China offer 0% duty for this classification.
- EU and UK may impose small tariffs (0-6%) but are generally low.
- No major trade war tariffs apply to this chemical mastic category.
π VI. Common Mistakes & Pitfall Guide (Lessons Learned)
β Mistake 1: Declaring as "Plastic Sealant" (HS 3906)
π Consequence: Wrong chapter, potential 3-5% tariff difference, audit risk.
Fix: If rubber/resin-based, use 3214.
β Mistake 2: Calling it "Paint" or "Coating"
π Consequence: Classified under 3208/3209, which may have different regulatory requirements (e.g., VOC limits).
Fix: Use "Mastic," "Caulking Compound," or "Putty."
β Mistake 3: Ignoring SDS Requirements
π Consequence: CBP may hold shipment for chemical review.
Fix: Provide SDS Section 3 (Composition) showing rubber/resin base.
β Mistake 4: Vague Description ("Fire Repair Stuff")
π Consequence: CBP may assign wrong code or delay clearance.
Fix: Use precise technical name: "Fast-Drying Rubber-Based Fireproof Mastic."
β Correct Declaration Example:
"Fast-Drying Fireproof Repair Mastic, Rubber-Based, Non-Flammable, for Sealing Gaps, Model XYZ, SDS Available"
π― VII. Conclusion: Professional Declaration Saves Time & Money
π― Remember the Mnemonic:
πΉ "Mastic not Paint, Rubber not Plastic, 0% Tax in US, Docs Must Be Solid!"
πΉ "HS Code 3214 is King for Mastics, Zero Duty for Clearances!"
π Pro Tip:
- If your product is solvent-free or water-based, emphasize this in the description to avoid hazardous material reviews.
- For high-volume imports, consider Advance Ruling from CBP to lock in the 3214.90.50.00 classification and 0% rate certainty.
π£ Immediate Action:
π Contact Your Customs Broker + Provide SDS + Declare as "Rubber-Based Fireproof Mastic"
π Clear Customs Smoothly, Avoid Audits, Keep Costs at 0%!
β¨ Professional Clearance Starts with Accurate Classification!
πΌ Your Compliance, Your Profit Margin!
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.