HS code · 6-digit subheading
HS Code 3214.90 – Mastics; n.e.c. in heading no. 3214
HS code 3214.90 is the 6-digit subheading for mastics, n.e.c. in heading no. 3214. It is used for silicone sealant, acrylic caulk, polyurethane adhesive, butyl rubber mastic and epoxy filler.
What HS 3214.90 covers
This code covers various mastics not specifically classified elsewhere within heading 3214, which broadly deals with glazing putty, grafting putty, resins, and other filling compounds. In international trade, these mastics are crucial for construction, automotive, marine, and general manufacturing industries, serving as sealants, adhesives, and fillers. Importers typically include construction companies, automotive assembly plants, shipyards, and distributors of building materials or industrial supplies. Exporters are often chemical manufacturers or specialized producers of sealing compounds. Key aspects to consider are the chemical composition (e.g., acrylic, silicone, polyurethane), application method (e.g., gunnable, trowelable), and performance characteristics like elasticity, weather resistance, and adhesion to different substrates. Trade in these products is driven by infrastructure development, housing construction, and industrial production cycles globally. Regulatory compliance regarding VOC content and specific industry standards (e.g., for fire resistance or food contact) can significantly impact market access and trade flows.
- Covers
- Silicone sealant
- Acrylic caulk
- Polyurethane adhesive
- Butyl rubber mastic
- Epoxy filler
- Bituminous sealant
- Fire-rated mastic
- Soundproofing mastic
- Examples
- SikaFlex-221
- GE Silicone II
- Loctite PL Premium
- Tremco Tremflex 834
- DAP Dynaflex 230
Codes often confused with 3214.90
Common mistake. This code can be confused with 321410 (glazing putty, grafting putty, resin cements) if the product's primary use is for glazing or grafting, or with various adhesive codes in Chapter 35 if the primary function is bonding rather than sealing or filling.
Top exporters and importers of HS code 321490, 2025
In 2025, the largest exporter of HS code 321490 in UN Comtrade data was Germany, with 22% of world exports; the largest importer in UN Comtrade data was Germany, with 4.2% 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 Germany $600M 22% of world exports
- 2 Austria $193M 6.9% of world exports
- 3 United States $190M 6.9% of world exports
World total: $2.8B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Germany $121M 4.2% of world imports
- 2 Netherlands $120M 4.2% of world imports
- 3 France $104M 3.6% of world imports
World total: $2.8B 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 code for 3214.90
Brazil does not split HS 3214.90: its NCM code is 3214.90.00.
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 3214.90
What is HS code 321490?
HS code 321490 is a 6-digit subheading in the Harmonized System that covers: Mastics; n.e.c. in heading no. 3214. This code covers various mastics not specifically classified elsewhere within heading 3214, which broadly deals with glazing putty, grafting putty, resins, and other filling compounds. In international trade, these mastics are crucial for construction, automotive, marine, and general manufacturing industries, serving as sealants, adhesives, and fillers. Importers typically include construction companies, automotive assembly plants, shipyards, and distributors of building materials or industrial supplies. Exporters are often chemical manufacturers or specialized producers of sealing compounds. Key aspects to consider are the chemical composition (e.g., acrylic, silicone, polyurethane), application method (e.g., gunnable, trowelable), and performance characteristics like elasticity, weather resistance, and adhesion to different substrates. Trade in these products is driven by infrastructure development, housing construction, and industrial production cycles globally. Regulatory compliance regarding VOC content and specific industry standards (e.g., for fire resistance or food contact) can significantly impact market access and trade flows.
What products fall under HS code 321490?
Silicone sealant, Acrylic caulk, Polyurethane adhesive, Butyl rubber mastic, Epoxy filler, Bituminous sealant, Fire-rated mastic, Soundproofing mastic
What are common misclassifications for HS code 321490?
This code can be confused with 321410 (glazing putty, grafting putty, resin cements) if the product's primary use is for glazing or grafting, or with various adhesive codes in Chapter 35 if the primary function is bonding rather than sealing or filling.
Which countries are the top exporters of goods under HS code 321490?
In 2025, the top exporters of HS code 321490 in UN Comtrade data were Germany ($600M, 22% of world exports), Austria ($193M) and the United States ($190M). World exports came to about $2.8B, 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 321490?
In 2025, the top importers of HS code 321490 in UN Comtrade data were Germany ($121M, 4.2% of world imports), the Netherlands ($120M) and France ($104M). World imports came to about $2.8B, 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 321490 structured?
HS code 321490 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 (90) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 321490?
In Brazil, HS code 321490 is NCM 3214.90.00. The last two digits are 00 because Brazil does not split this HS code further.