HS 321410 Glaziers' putty, grafting putty, resin cements, caulking compounds and other mastics; painters' fillings

Quick Answer: Glaziers' putty, grafting putty, resin cements, caulking compounds, other mastics, and painters' fillings imported under HS 321410 enter the UK at 4.00%, the EU at 5.00%, and the US at 3.7% under the Most Favored Nation (MFN) rate. This classification encompasses a range of pliable sealing and filling materials used in construction, repair, and painting. Importers should note that the US offers duty-free entry for goods from specific Free Trade Agreement partners, as detailed in the US Harmonized Tariff Schedule. CustomTariffs aggregates this data, highlighting the importance of verifying specific origin-based preferential rates for optimal trade compliance.

What Are the Import Duty Rates?

🇬🇧 United Kingdom

Code MFN Preferential Unit
3214101000 4.00 %
3214100000
3214109000 4.00 %

🇪🇺 European Union (TARIC)

Code MFN Preferential Unit
3214100000 5.00 %
3214101000 5.00 %
3214109000 5.00 %

🇺🇸 United States (HTSUS)

Code MFN Preferential Unit
3214100010 ["kg"]
3214100090 ["kg"]
32141000 3.7% Free (17 programs)
3214100020 ["kg"]

Special rates available under trade agreements including USMCA, KORUS, GSP.

Duty rates sourced from the USITC (US International Trade Commission) Harmonized Tariff Schedule (HTS) (accessed 2/22/2026), EU TARIC – DG TAXUD (Directorate-General for Taxation and Customs Union) (accessed 2/22/2026), and UK Trade Tariff – HMRC (His Majesty's Revenue and Customs) (accessed 2/22/2026).

Data compiled and presented by HSRates.

Which Trade Agreements Reduce Duties for HS 3214.10?

Imports of Glaziers' putty, grafting putty, resin cements, caulking compounds and other mastics; painters' fillings may qualify for reduced or zero duty rates under free trade agreements and preferential programs. The overview below shows available preferential arrangements by jurisdiction, compiled by HSRates from official tariff and trade agreement data.

United States (HTSUS)

Free for USMCA, KORUS, GSP, and 14 other programs

European Union (TARIC)

Preferential rate data not yet available.

United Kingdom

Preferential rate data not yet available.

Preferential rates require proof of origin and may be subject to quotas or conditions. Always verify eligibility with a licensed customs broker.

Data compiled by HSRates.

Which Preferential Rates Apply to Your Origin Country?

Select an origin country to see if preferential rates apply.

Preferential rates based on available trade agreements. Actual rates may vary.

How to Classify This HS Code?

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What products does HS 321410 cover?

This subheading covers "Glaziers' putty, grafting putty, resin cements, caulking compounds and other mastics; painters' fillings" as defined by the World Customs Organization (WCO) Harmonized System Nomenclature. This includes pliable sealing materials used for filling gaps, joints, or cracks, such as those used by glaziers to fix glass in window frames, or for horticultural grafting. It also encompasses resin-based cements and various mastics and fillers intended for painting or surface preparation, often supplied in paste or semi-liquid form.

What falls outside HS 321410?

The following products are excluded from HS 321410: adhesives and glues not specifically described as mastics or putties, which are typically classified under heading 3506. Also excluded are products primarily intended for repair or filling of specific substrates like concrete or asphalt, which may fall under other headings depending on their composition and intended use. For instance, self-adhesive tapes or sheets, even if used for sealing, are generally classified elsewhere.

What are common classification mistakes for HS 321410?

A common error is misclassifying general-purpose adhesives or sealants that do not meet the specific characteristics of putties, mastics, or caulking compounds. For example, liquid sealants with a very low viscosity or those that cure into a rigid plastic rather than a flexible or semi-rigid mass may not fit the description. According to General Rule of Interpretation (GRI) 1, classification is determined by the terms of the headings and any relative Section or Chapter Notes, requiring a precise understanding of the product's function and physical properties.

How should importers classify products under HS 321410?

The correct procedure for classifying products under HS 321410 involves a thorough examination of the product's technical specifications, intended use, and physical properties. Importers and customs brokers should consult the official tariff schedule of the importing country, such as the USITC Harmonized Tariff Schedule (HTS) or the EU TARIC database, to verify the exact wording of the subheading. Reviewing product literature, Safety Data Sheets (SDS), and potentially obtaining a binding ruling from customs authorities can confirm the correct classification.

How is the duty calculated for products under HS 321410?

A 50 kg drum of a silicone-based caulking compound, declared at a customs value of $250 USD, would attract a US Most Favored Nation (MFN) duty of $12.50 USD. This is calculated using the MFN rate of 5% ad valorem (0.05 × $250 USD = $12.50 USD), as published in the USITC Harmonized Tariff Schedule for products within this category.

Which trade agreements reduce duties for HS 321410?

Several free trade agreements may reduce the applicable duty rate for HS 321410, including the United States-Mexico-Canada Agreement (USMCA), which can result in a Free duty rate for qualifying goods originating from Canada or Mexico. Additionally, the Generalized System of Preferences (GSP) may offer reduced or Free duty rates for eligible goods from certain developing countries. To claim these preferences, importers typically require a self-certified origin statement for USMCA or a GSP Form A for GSP-eligible countries, depending on the specific agreement and jurisdiction.

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FAQ

What are the typical import duty rates for HS code 321410 (Glaziers' putty, grafting putty, resin cements, caulking compounds and other mastics; painters' fillings)?

Import duty rates for HS code 321410 can vary significantly depending on the importing country and any applicable trade agreements. For example, under the US Harmonized Tariff Schedule (HTS), the Most Favored Nation (MFN) rate is typically 3.7% ad valorem. However, preferential rates under various Free Trade Agreements (FTAs) may apply. For instance, goods from Australia (AU), Canada (CA), or Mexico (MX) under the USMCA may enter duty-free. Always consult the specific tariff schedule of the importing country for the most accurate and up-to-date rates. The EU TARIC system and the UK Trade Tariff also provide detailed rate information for those regions, which can differ from US rates.

How is the import duty for HS code 321410 calculated, and can you provide an example?

The duty for HS code 321410 is typically calculated on an ad valorem basis, meaning it's a percentage of the declared customs value of the goods. For example, if the MFN duty rate is 3.7% and you import 1,000 kilograms of glaziers' putty with a declared customs value of $5,000 USD, the duty calculation would be: $5,000 (value) × 0.037 (duty rate) = $185 USD. Some countries may also have specific excise duties or taxes applied in addition to the customs duty. Always verify the basis of valuation and any other applicable charges.

What are the key classification criteria for goods under HS code 321410?

HS code 321410 covers a range of putties, cements, mastics, and painters' fillings. The primary classification criteria revolve around the product's composition and intended use. 'Glaziers' putty' is typically a soft, pliable mixture used for setting glass panes. 'Grafting putty' is used in horticulture. 'Resin cements' are adhesives based on resins. 'Caulking compounds' and 'mastics' are used to seal joints and gaps, often in construction or automotive applications. 'Painters' fillings' are used to fill cracks and imperfections before painting. Products that do not fit these descriptions or have specific uses covered by other HS codes (e.g., certain industrial adhesives) would be classified elsewhere. Consult the Explanatory Notes to the Harmonized System for detailed guidance.

What documentation is typically required for importing products classified under HS code 321410?

Standard import documentation for HS code 321410 generally includes a commercial invoice detailing the product description, quantity, unit price, and total value; a packing list specifying the contents of each package; and a bill of lading or air waybill for transportation. Depending on the importing country and the specific product, additional documentation may be required. This could include a certificate of origin to claim preferential duty rates under a trade agreement, safety data sheets (SDS) if the product is considered hazardous, or specific import permits if the product is subject to regulatory control. Importers and customs brokers should always verify the specific requirements with the customs authorities of the destination country.

Which common trade agreements might offer preferential duty rates for HS code 321410, and how can importers verify eligibility?

Many trade agreements can provide preferential duty rates for goods classified under HS code 321410. For example, the United States has agreements like the USMCA (United States-Mexico-Canada Agreement) where qualifying goods may receive duty-free entry. The EU has numerous Economic Partnership Agreements (EPAs) and Association Agreements with countries worldwide, and the UK has its own set of trade deals post-Brexit. To verify eligibility, importers must ensure that the goods meet the rules of origin stipulated in the specific trade agreement. This typically involves obtaining a Certificate of Origin from the exporter, which confirms that the product qualifies as originating from the partner country. Importers should consult the text of the relevant trade agreement and the customs regulations of the importing country, often accessible through government trade websites or customs agency portals, to confirm specific requirements and eligible countries.