HS code · 6-digit subheading

HS Code 3214.10 – Mastics; painters' fillings

HS code 3214.10 is the 6-digit subheading for mastics, painters' fillings. It is used for acrylic caulk, silicone sealant, wood filler, spackling paste and joint compound.

What HS 3214.10 covers

This HS code covers mastics and painters' fillings, which are viscous compounds used in construction and finishing work to seal joints, fill gaps, smooth surfaces, and provide adhesion. These products are essential for preparing surfaces before painting, ensuring a smooth, durable, and aesthetically pleasing finish. They are widely traded internationally due to their critical role in building and renovation projects. Importers include construction companies, hardware retailers, and DIY stores. Exporters are chemical companies and manufacturers of building materials. Trade often involves considerations for adhesion properties, flexibility, drying time, and compatibility with various substrates and paint types.

Covers
  • Acrylic caulk
  • Silicone sealant
  • Wood filler
  • Spackling paste
  • Joint compound
  • Glazing putty
  • Crack filler
  • Decorators' caulk
  • Expanding foam filler
Examples
  • DAP Alex Plus Caulk
  • Red Devil Spackling
  • Gorilla Sealant
  • Polyfilla
  • SikaFlex Sealant
  • Loctite PL Premium

Codes often confused with 3214.10

Common mistake. Can be confused with other adhesives (3506) or other prepared binders (3824) if their specific function as 'mastics' or 'painters' fillings' is not emphasized.

35.06Prepared glues and other prepared adhesives, n.e.c. or included; products suitable for use as glues or adhesives, put up for retail sale as glues or adhesives, not exceeding 1kg net weight38.24Prepared binders for foundry moulds or cores; chemical products and preparations of the chemical or allied industries (including those consisting of mixtures of natural products), not elsewhere specified or included

Top exporters and importers of HS code 321410, 2025

In 2025, the largest exporter of HS code 321410 in UN Comtrade data was Germany, with 22% of world exports; the largest importer in UN Comtrade data was Germany, with 8.0% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.

Top exporters 2025 · share of world exports

  1. 1 Germany $1.9B
  2. 2 United States $932M
  3. 3 Belgium $726M

World total: $8.8B Reported figures on UN Comtrade ↗

Top importers 2025 · share of world imports

  1. 1 Germany $706M
  2. 2 China $588M
  3. 3 United States $483M

World total: $8.8B Reported figures on UN Comtrade ↗

How these figures are built

109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).

Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.

Brazil NCM codes for 3214.10 2

Brazil splits HS 3214.10 into 2 NCM codes, Mercosur's 8-digit tariff lines.

  1. 3214.10.10 Glaziers' putty, resin cements and other masticsMástique de vidraceiro, cimentos de resina e outras mástiques
  2. 3214.10.20 Painters' fillingsIndutos utilizados em pintura

All Brazil NCM codes in heading 32.14 →

Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.

Questions about HS 3214.10

What is HS code 321410?

HS code 321410 is a 6-digit subheading in the Harmonized System that covers: Mastics; painters' fillings. This HS code covers mastics and painters' fillings, which are viscous compounds used in construction and finishing work to seal joints, fill gaps, smooth surfaces, and provide adhesion. These products are essential for preparing surfaces before painting, ensuring a smooth, durable, and aesthetically pleasing finish. They are widely traded internationally due to their critical role in building and renovation projects. Importers include construction companies, hardware retailers, and DIY stores. Exporters are chemical companies and manufacturers of building materials. Trade often involves considerations for adhesion properties, flexibility, drying time, and compatibility with various substrates and paint types.

What products fall under HS code 321410?

Acrylic caulk, silicone sealant, wood filler, spackling paste, joint compound, glazing putty, crack filler, decorators' caulk, expanding foam filler

What are common misclassifications for HS code 321410?

Can be confused with other adhesives (3506) or other prepared binders (3824) if their specific function as 'mastics' or 'painters' fillings' is not emphasized.

Which countries are the top exporters of goods under HS code 321410?

In 2025, the top exporters of HS code 321410 in UN Comtrade data were Germany ($1.9B, 22% of world exports), the United States ($932M) and Belgium ($726M). World exports came to about $8.8B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

Which countries are the top importers of goods under HS code 321410?

In 2025, the top importers of HS code 321410 in UN Comtrade data were Germany ($706M, 8.0% of world imports), China ($588M) and the United States ($483M). World imports came to about $8.8B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

How is HS code 321410 structured?

HS code 321410 is a 6-digit subheading under the Harmonized System. The first 2 digits (32) identify the chapter, digits 3-4 (14) identify the heading, and digits 5-6 (10) specify the subheading. This code is standardized globally by the World Customs Organization.

What is the Brazil NCM code for HS code 321410?

Brazil splits HS code 321410 into 2 NCM codes: 3214.10.10 (Glaziers' putty, resin cements and other mastics), 3214.10.20 (Painters' fillings). The first 6 digits of each match the HS code.