Product classification
HS code for Mica insulation: 6814.90
Mica, worked mica and articles of mica (excluding plates, sheets and strips) whether or not on a support of paper, paperboard or other materials.
Classification of mica insulation under HS 6814.90
Mica insulation products are classified under HS code 6814.90. This classification falls under Chapter 68, which covers articles of stone, plaster, cement, asbestos, mica, or similar materials. Heading 6814 is dedicated to worked mica and articles of mica. While 6814.10 covers plates and sheets of agglomerated mica, the sub-heading 6814.90 is the residual category for all other worked mica articles. This includes mica that has been cut to specific shapes for use as electrical insulation, such as washers, discs, or tubes. The classification is based on the fact that the mica has undergone significant working beyond simple splitting or grinding. Because mica is a superior dielectric material, these articles are essential in high-voltage and high-temperature electrical applications. The classification remains in 6814.90 as long as the article is primarily composed of mica, even if it is reinforced with other materials like glass cloth or paper, provided the mica gives the article its essential character.
- Covers
- Mica washers and discs
- Mica tubes for electrical insulation
- Fabricated mica parts for heaters
- Mica segments for commutators
- Worked mica for window panes (e.g., for furnaces)
- Also under 6814.90
- Cogebi mica tubes
- Ruby Mica gaskets
- Pamica mica components
- Von Roll mica parts
- ISOVOLTA mica insulators
Codes often confused with 6814.90
Common mistake. Mica insulation is frequently misclassified under HS code 8546.90, which covers electrical insulators of any material. However, Note 1(c) to Chapter 85 excludes articles of mica from that chapter if they are classified in Heading 6814. Another common error is using 2525.10, which is reserved for crude mica or mica splittings that have not been further worked into specific articles.
Top exporters and importers of HS 681490 (the code used for mica insulation), 2025
In 2025, the largest exporter of HS 681490 (the code used for mica insulation) in UN Comtrade data was Austria, with 25% of world exports; the largest importer in UN Comtrade data was Saudi Arabia, with 42% 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 681490, not only mica insulation.
Top exporters 2025 · share of world exports
- 1 Austria $30M 25% of world exports
- 2 China $25M 21% of world exports
- 3 Germany $22M 18% of world exports
World total: $121M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Saudi Arabia $101M 42% of world imports
- 2 United States $24M 10% of world imports
- 3 Germany $20M 8.3% of world imports
World total: $240M 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 mica insulation
Brazil classifies mica insulation under NCM 6814.90.00: HS 6814.90 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about mica insulation
What is the HS code for Mica insulation?
The HS code for Mica insulation is 681490 (Mica; worked mica and articles of mica (excluding plates, sheets and strips) whether or not on a support of paper, paperboard or other materials). The HS code for worked mica insulation articles is 6814.90.
How do I classify Mica insulation for customs?
Mica insulation is classified under HS code 681490 — Mica; worked mica and articles of mica (excluding plates, sheets and strips) whether or not on a support of paper, paperboard or other materials. This is a 6-digit subheading level code.
Does this code include mica tape?
Mica tape is often classified under 6814.10 if it is in the form of sheets or strips of agglomerated mica, but if it is a specific fabricated part, it may fall under 6814.90.
Which countries are the top exporters of mica insulation (HS 681490)?
In 2025, the top exporters of HS 681490 (the code used for mica insulation) in UN Comtrade data were Austria ($30M, 25% of world exports), China ($25M) and Germany ($22M). World exports came to about $121M, 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 mica insulation (HS 681490)?
In 2025, the top importers of HS 681490 (the code used for mica insulation) in UN Comtrade data were Saudi Arabia ($101M, 42% of world imports), the United States ($24M) and Germany ($20M). World imports came to about $240M, 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 Mica insulation the same in all countries?
The base HS code 681490 for Mica insulation 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 mica insulation in Brazil?
In Brazil, mica insulation (HS 681490) is classified under NCM 6814.90.00.