HS code · 6-digit subheading
HS Code 3506.91 – Adhesives; prepared, based on polymers of heading 3901 to 3913 or on rubber
HS code 3506.91 is the 6-digit subheading for adhesives, prepared, based on polymers of heading 3901 to 3913 or on rubber. It is used for polyurethane adhesive, acrylic sealant, silicone adhesive, epoxy resin adhesive and hot melt adhesive (EVA/polyolefin based).
What HS 3506.91 covers
This HS code covers prepared adhesives primarily based on synthetic polymers from headings 3901 to 3913 (e.g., polyurethanes, acrylics, silicones, epoxies) or on rubber. These are industrial-grade adhesives engineered for high performance, offering superior bonding strength, flexibility, and resistance to environmental factors compared to many natural glues. They are extensively used across critical sectors such as construction, automotive manufacturing, electronics, footwear, and advanced packaging. Major importers are manufacturing companies across various industries requiring robust and specialized bonding solutions. Exporters are typically countries with advanced chemical industries and significant polymer production capabilities. Key trade considerations include the specific polymer type, curing time, application method, temperature resistance, and strict compliance with industrial safety and environmental regulations. The precise performance characteristics are paramount for industrial buyers.
- Covers
- Polyurethane adhesive
- Acrylic sealant
- Silicone adhesive
- Epoxy resin adhesive
- Hot melt adhesive (EVA/polyolefin based)
- Contact cement (rubber-based)
- Construction adhesive
- Examples
- SikaBond
- 3M VHB Tapes (adhesive component)
- Henkel Loctite (industrial range)
- Bostik industrial adhesives
- Dow Corning silicone sealants
Codes often confused with 3506.91
Common mistake. Often confused with other prepared glues (350699) if the polymer or rubber base is not explicitly identified. Also, raw polymers (3901-3913) are distinct from prepared adhesives and should not be classified here.
Top exporters and importers of HS code 350691, 2025
In 2025, the largest exporter of HS code 350691 in UN Comtrade data was China, with 19% of world exports; the largest importer in UN Comtrade data was China, with 17% of world imports. Vietnam did not report 2025 data, and its estimate from partner records misses its trade with other countries that did not report: in 2024 that was 8.6% of its imports here ($44M, CEPII BACI), so it may also belong among the top importers.
Top exporters 2025 · share of world exports
- 1 China $1.9B 19% of world exports
- 2 Germany $1.8B 19% of world exports
- 3 United States $1.2B 12% of world exports
World total: $9.7B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 China $1.7B 17% of world imports
- 2 Germany $697M 7.1% of world imports
- 3 United States $524M 5.4% of world imports
Vietnam did not report 2025 data, and its estimate from partner records misses its trade with other countries that did not report: in 2024 that was 8.6% of its imports here ($44M, CEPII BACI), so it may also belong among the top importers.
World total: $9.8B 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 3506.91 3
Brazil splits HS 3506.91 into 3 NCM codes, Mercosur's 8-digit tariff lines.
- 3506.91.10 Rubber-based adhesivesÀ base de borracha
- 3506.91.20 Water-dispersible polymer-based adhesivesÀ base de polímeros das posições 39.01 a 39.13, dispersos ou para dispersar em meio aquoso
- 3506.91.90 Other polymer-based adhesivesOutros
All Brazil NCM codes in heading 35.06 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
Questions about HS 3506.91
What is HS code 350691?
HS code 350691 is a 6-digit subheading in the Harmonized System that covers: Adhesives; prepared, based on polymers of heading 3901 to 3913 or on rubber. This HS code covers prepared adhesives primarily based on synthetic polymers from headings 3901 to 3913 (e.g., polyurethanes, acrylics, silicones, epoxies) or on rubber. These are industrial-grade adhesives engineered for high performance, offering superior bonding strength, flexibility, and resistance to environmental factors compared to many natural glues. They are extensively used across critical sectors such as construction, automotive manufacturing, electronics, footwear, and advanced packaging. Major importers are manufacturing companies across various industries requiring robust and specialized bonding solutions. Exporters are typically countries with advanced chemical industries and significant polymer production capabilities. Key trade considerations include the specific polymer type, curing time, application method, temperature resistance, and strict compliance with industrial safety and environmental regulations. The precise performance characteristics are paramount for industrial buyers.
What products fall under HS code 350691?
Polyurethane adhesive, acrylic sealant, silicone adhesive, epoxy resin adhesive, hot melt adhesive (EVA/polyolefin based), contact cement (rubber-based), construction adhesive
What are common misclassifications for HS code 350691?
Often confused with other prepared glues (350699) if the polymer or rubber base is not explicitly identified. Also, raw polymers (3901-3913) are distinct from prepared adhesives and should not be classified here.
Which countries are the top exporters of goods under HS code 350691?
In 2025, the top exporters of HS code 350691 in UN Comtrade data were China ($1.9B, 19% of world exports), Germany ($1.8B) and the United States ($1.2B). World exports came to about $9.7B, 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 350691?
In 2025, the top importers of HS code 350691 in UN Comtrade data were China ($1.7B, 17% of world imports), Germany ($697M) and the United States ($524M). World imports came to about $9.8B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Vietnam did not report 2025 data, and its estimate from partner records misses its trade with other countries that did not report: in 2024 that was 8.6% of its imports here ($44M, CEPII BACI), so it may also belong among the top importers.
How is HS code 350691 structured?
HS code 350691 is a 6-digit subheading under the Harmonized System. The first 2 digits (35) identify the chapter, digits 3-4 (06) identify the heading, and digits 5-6 (91) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 350691?
Brazil splits HS code 350691 into 3 NCM codes: 3506.91.10 (Rubber-based adhesives), 3506.91.20 (Water-dispersible polymer-based adhesives), 3506.91.90 (Other polymer-based adhesives). The first 6 digits of each match the HS code.