Product classification
HS code for Thermos: 9617.00
Vacuum flasks and other vacuum vessels, complete with cases, parts thereof other than glass inners.
Classification of thermos under HS 9617.00
A thermos, or vacuum flask, is classified under HS code 9617.00. This heading is part of Chapter 96, which encompasses miscellaneous manufactured articles. The specific description for 9617.00 includes vacuum flasks and other vacuum vessels, complete with cases, as well as parts thereof other than glass inners. The classification is determined by the physical construction of the vessel, which must feature a double-wall design with a vacuum-sealed space between the walls to prevent heat transfer by conduction or convection. This heading is unique because it covers the finished article regardless of the material of the outer shell (whether plastic, stainless steel, or aluminum). The General Rules of Interpretation (GRI) 1 dictate that the terms of the heading are the primary authority; since 9617.00 explicitly names vacuum flasks, it takes precedence over headings based on the component material (like 7323 for steel or 3924 for plastic). It is important to note that this code applies to the complete assembly. If a vacuum flask is imported without its outer case (just the glass inner), it is excluded from this heading and must be classified according to its material, typically under heading 7020 as an article of glass.
- Covers
- Stainless steel vacuum-insulated water bottles
- Vacuum-insulated food jars and thermoses
- Glass-lined vacuum carafes with plastic outer shells
- Replacement caps and stoppers for vacuum flasks
- Insulated pump-action airpots
- Also under 9617.00
- Stanley Classic Vacuum Bottle
- Hydro Flask
- Yeti Rambler
- Thermos brand vacuum flasks
- Zojirushi vacuum mugs
- Klean Kanteen insulated bottles
- Contigo travel mugs.
Codes often confused with 9617.00
Common mistake. Thermoses are frequently misclassified under 7323.93 (table or kitchenware of stainless steel) or 3924.10 (plastic tableware). While many thermoses are made of these materials, the specific function of vacuum insulation moves them to 9617.00. Another common error involves glass inners; if imported alone, they should be classified under 7020.00, but many importers mistakenly use 9617.00 for the parts, forgetting the exclusion for glass inners in the heading text.
Top exporters and importers of HS 961700 (the code used for thermos), 2025
In 2025, the largest exporter of HS 961700 (the code used for thermos) in UN Comtrade data was China, with 78% of world exports; the largest importer in UN Comtrade data was the United States, with 27% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Figures cover everything classified under HS 961700, not only thermos.
Top exporters 2025 · share of world exports
- 1 China $5.1B 78% of world exports
- 2 Netherlands $225M 3.5% of world exports
- 3 United States $147M 2.3% of world exports
World total: $6.5B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United States $1.5B 27% of world imports
- 2 Japan $275M 5.0% of world imports
- 3 Germany $238M 4.3% of world imports
World total: $5.5B 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 thermos
Brazil splits HS 9617.00 into 2 NCM codes. Pick the one that matches your product:
- 9617.00.10Vacuum flasks and other vacuum vessels
- 9617.00.20Parts of vacuum flasks, excluding glass inners
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about thermos
What is the HS code for Thermos?
The HS code for Thermos is 961700 (Vacuum flasks and other vacuum vessels, complete with cases; parts thereof other than glass inners). The HS code for a complete thermos or vacuum flask is 9617.00.
How do I classify Thermos for customs?
Thermos is classified under HS code 961700 — Vacuum flasks and other vacuum vessels, complete with cases; parts thereof other than glass inners. This is a 6-digit subheading level code.
Does this code cover insulated mugs without a vacuum?
No, if the mug uses foam insulation or simple double-wall air insulation without a vacuum, it is classified by its material (e.g., 7323 for steel or 3924 for plastic).
Which countries are the top exporters of thermos (HS 961700)?
In 2025, the top exporters of HS 961700 (the code used for thermos) in UN Comtrade data were China ($5.1B, 78% of world exports), the Netherlands ($225M) and the United States ($147M). World exports came to about $6.5B, 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 thermos (HS 961700)?
In 2025, the top importers of HS 961700 (the code used for thermos) in UN Comtrade data were the United States ($1.5B, 27% of world imports), Japan ($275M) and Germany ($238M). World imports came to about $5.5B, 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.
Is the HS code for Thermos the same in all countries?
The base HS code 961700 for Thermos is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for thermos in Brazil?
Brazil splits HS 961700 into 2 NCM codes, so the right one for thermos depends on the product's details: 9617.00.10 (Vacuum flasks and other vacuum vessels), 9617.00.20 (Parts of vacuum flasks, excluding glass inners).