U.S. imports of Vacuum Flasks & Other Vacuum Vessels, Complete; Parts (HS 961700) totaled $172.6M in August 2026, imported from 32 countries.
Importers of Vacuum Flasks & Other Vacuum Vessels, Complete; Parts paid $33.4M in duties in August 2026, an average duty rate of 19.34% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Vacuum Flasks & Other Vacuum Vessels, Complete; Parts imports of $172.6M in August 2026 ran 23% above the year-to-date monthly average of $140.8M.
Last updated: August 2026 dataVacuum flasks and insulated vessels — commonly known as thermos bottles — are segmented in the US tariff schedule by capacity: not over 1 liter (9617001000), over 1 liter but not over 2 liters (9617003000), over 2 liters (9617004000), complete with cases (9617002000), and non-glass parts (9617006000). China is the dominant supplier, with Vietnam a growing secondary source. Goods of Chinese origin in this category are subject to Section 301 tariffs, making Vietnam and other ASEAN suppliers increasingly attractive for supply-chain diversification.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
7.8K import shipments a month
The US schedule breaks vacuum vessels into three capacity brackets — not over 1 liter, over 1 liter up to 2 liters, and over 2 liters — plus a separate line for vessels sold complete with cases and another for non-glass parts. Importers should measure the actual internal volume and confirm whether the product is sold with a carrying case, as each condition maps to a distinct tariff line.
No. The heading explicitly excludes glass inners; replacement glass liners for vacuum flasks are classified elsewhere in the schedule. Only non-glass parts fall under 9617006000 within this heading.
Subheading 1 of 1 in heading 9617
Subheading 961700 · $172.6M of $172.6M
Trade Directory
List your company under HS 961700 — Vacuum Flasks & Other Vacuum Vessels, Complete; Parts, so the companies trading it can find you. Be the first supplier listed.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 9617001000 | Vacuum Flasks & Othr Vacuum Vessels, Not Over 1 Ltr | $140.4M | 19.31% | 100.00% | $27.1M |
| 9617003000 | Vacuum Flasks & Othr Vac Vessel, Ov 1 Ltr, N/O 2 Ltr | $30.1M | 19.24% | 100.00% | $5.8M |
| 9617004000 | Vacuum Flasks & Othr Vacuum Vessels, Over 2 Liters | $1.8M | 23.29% | 100.00% | $412K |
| 9617006000 | Parts of Vacuum Flasks Etc, Except Glass Inners | $460K | 18.85% | 99.38% | $87K |
Vacuum Flasks & Othr Vacuum Vessels, Not Over 1 Ltr
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 9617002000 | Flask and Other Vessels, Complete With Cases | $10.5M |
| 9617006000 | Parts of Vacuum Flasks Etc, Except Glass Inners | $593K |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Imports · August 2026
origin
China and Vietnam together supply 89% of it.
customs district
destination
entry
rate provision · imports
duty collected equals 19.34% of imports for consumption.
ImportsExports
Imports
$172.6MYoY · free account
Exports
$11.1MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $1.6B of Vacuum Flasks & Other Vacuum Vessels, Complete; Parts and exported $137.4M.
Through August 2026. Source: U.S. Census Bureau.