Insulating fittings not elsewhere specified, for electrical machines or appliances; electrical conduit tubing and joints, of base metal lined with insulating material

US trade by year

US imports were $210.8M in the 12 months to Aug 2026, up 89% on the 12 months to Aug 2017. US exports were $189.3M, down 2.7%. In January 2022 the HS 2022 revision moved some goods between this code and 8549.21, 8549.29, 8549.31 and 3 more, so part of a change across the dashed line can be the revision. Dotted lines mark lasting changes in duty paid, labelled with the supplier, or "Duty" when several moved; the tariff timeline lists each one with its notices.

• Mexico
• Canada
• China
• Japan
• All countries

Who supplies the US

August 2026. Small figures under each value are the change from August 2025. Average prices aren't shown because this product's lines are counted in different units.

The 3 largest suppliers had 56.0% of US imports over the last 12 months.

How the market is shifting

Mexico gained the most share: 21.6% of US imports over the last 12 months, up from 17.1% in the 12 months before. China lost the most: 16.4%, down from 20.0%. The charts show September 2024 to August 2026 for the 4 largest suppliers over the last 12 months. Dotted lines mark lasting changes in duty paid, labelled with the supplier, or "Duty" when several moved; the tariff timeline lists each one with its notices.

• Mexico
• Canada
• China
• Japan
• All countries

Tariff actions touching this product

When the duty paid on this product changed and stayed changed, for its main suppliers and all countries, newest first, with the Federal Register notices that named the product in the 3 months before. Rates are medians of the 4 months either side, less any usual seasonal swing. A change shows what happened to duty paid, not why; read each notice for what it did.

1. September 2025–May 2026 · Duty paid: China 68.7% → 55.2%, Japan 20.5% → 19.2%, Korea, South 17.0% → 22.7%, all countries 27.2% → 21.6%.
2. March–May 2025 · Duty paid: Mexico 1.9% → 12.1%, Canada 0.9% → 8.4%, China 30.9% → 73.5%, Japan 4.9% → 19.3%, Korea, South 2.4% → 16.8%, all countries 9.7% → 22.6%.
   • Implementation of Duties on Steel Pursuant to Proclamation 10896 Adjusting Imports of Steel Into the United StatesMar 5, 2025 · Bureau of Industry and Security
   • Implementation of Duties on Aluminum Pursuant to Proclamation 10895 Adjusting Imports of Aluminum Into the United StatesMar 5, 2025 · Bureau of Industry and Security
3. June 2019 · Duty paid: China 14.7% → 28.1%.
4. October 2018 · Duty paid: China 4.6% → 14.6%.
   • Request for Comments Concerning Proposed Modification of Action Pursuant to Section 301: China's Acts, Policies, and Practices Related to Technology Transfer, Intellectual Property, and InnovationJul 17, 2018 · Office of the US Trade Representative

Markets abroad

Each country's own import figures for this product, from UN Comtrade: the 8 biggest importers outside the US in the latest year each has reported, what they bought from the US, and the change from the year before. Values usually include freight and insurance to the importer's border, so they run a little above US export figures. Countries report a year or more late; 124 have reported 2025 so far. Where a country's figure for imports from the US is under half or over double what the US recorded exporting there that year, the US figure is shown under it.

The biggest market outside the US is South Korea, which imported $115.5M of this product in 2025, 24.3% of that from the US.

The US supplies 56.5% of imports into Mexico, but under 10% into China, Germany and Saudi Arabia.

Of these, imports into Thailand grew fastest: up 141% from 2024 to 2025.

Related products

Other products under heading 8547: insulating fittings for electrical machines etc., primarily of insulating materials; conduit tubing etc. of base metal lined with insulating material. US trade over the 12 months to August 2026.