HS Code for Mica insulation

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.

Products Included

• 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)

Common Misclassification

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.

FAQ

What is the HS code for Mica insulation?

The HS code for worked mica insulation articles is 6814.90.

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.