Chapter 6814 — Customs Tariff Headings
Subheadings
Products classified under Tariff item 68.14
Agglomerated Mica Insulation Sheets
Agglomerated mica insulation sheets are plates and sheets made from agglomerated or reconstituted mica, often backed with paper support. They are used primarily for high-temperature electrical insulation in motors and transformers, falling under tariff item 6814.10.00 as plates, sheets, and strips of agglomerated or reconstituted mica, whether or not on a support.
6814.10.00Agglomerated Mica Roll Sheets
Agglomerated mica roll sheets are large sheets of agglomerated mica on paperboard support, supplied in rolls for die-cutting into insulation parts. They are classified under tariff item 6814.10.00 as sheets of agglomerated or reconstituted mica on a support, used in high-voltage applications.
6814.10.00Flexible Reconstituted Mica Plates
Flexible reconstituted mica plates are plates of reconstituted mica combined with resin and support for flexible insulation in commutators and switches. They fall under tariff item 6814.10.00 as plates of agglomerated or reconstituted mica on a support, providing flexibility and insulation.
6814.10.00High-Density Mica Boards
High-density mica boards are dense plates of agglomerated mica without support, used for rigid segment insulation in commutators. They fit under tariff item 6814.10.00 as plates of reconstituted mica, whether or not on a support, offering mechanical strength and insulation.
6814.10.00Mica Laminate Sheets for Heaters
Mica laminate sheets for heaters are agglomerated mica sheets on fiberglass or paper support, used in band heaters and cartridge heaters for thermal insulation. They are classified under tariff item 6814.10.00 as plates of reconstituted mica on a support, providing heat resistance.
6814.10.00Mica-Phlogopite Composite Strips
Mica-phlogopite composite strips are strips made from reconstituted phlogopite mica on polymer film support for vacuum circuit breakers. They fall under tariff item 6814.10.00 as agglomerated mica strips on support, offering superior thermal and electrical properties.
6814.10.00Reconstituted Mica Paper-Backed Strips
Reconstituted mica paper-backed strips are thin strips of reconstituted mica laminated on paper support, designed for slot insulation in electric motors and generators. They are classified under tariff item 6814.10.00 as strips of agglomerated mica on a support.
6814.90.00Agglomerated Mica Heating Element Plates
Agglomerated mica heating element plates are manufactured by bonding reconstituted mica with heat-resistant binders, then pressing them into flat plates. These plates are designed to support heating wires in electric heaters and toasters, where they provide electrical insulation and thermal stability. They fall under tariff item 6814.90.00 as articles of agglomerated mica, not elsewhere specified.
6814.90.00Agglomerated Mica Kiln Shelves
Agglomerated mica kiln shelves are large, flat panels made from reconstituted mica bonded with inorganic binders, capable of withstanding temperatures up to 1000°C. They are used in kilns to support pottery and ceramics during firing. These shelves are classified under tariff item 6814.90.00 as other articles of agglomerated mica.
6814.90.00Mica Electrical Insulation Sheets
Mica electrical insulation sheets are thin, flexible sheets made from worked mica, either split or cleaved, used to insulate electrical components in motors and transformers. They provide high dielectric strength and heat resistance. These sheets fall under tariff item 6814.90.00 as articles of worked mica not specified elsewhere.
6814.90.00Mica RF Window Disks
Mica RF window disks are circular pieces of worked mica that are transparent to radio frequencies, used in high-power RF transmitters as vacuum windows. They are made from high-quality muscovite mica, carefully cleaved and shaped. These disks are classified under tariff item 6814.90.00 as articles of worked mica.
6814.90.00Mica Shim Stock Sheets
Mica shim stock sheets are precision-cut sheets of worked mica used as shims for aligning machinery in precision equipment. They are made from split mica, cut to exact thicknesses for spacing and leveling. These sheets fall under tariff item 6814.90.00 as other articles of worked mica for industrial use.
6814.90.00Mica Vacuum Tube Spacers
Mica vacuum tube spacers are stamped washers and spacers made from worked mica, used to insulate electrodes in vacuum tubes for radios and amplifiers. They are precision-cut to fit specific tube designs and provide thermal and electrical insulation. These spacers are classified under tariff item 6814.90.00 as articles of worked mica.
6814.90.00Mica Window Strips for Furnaces
Mica window strips for furnaces are transparent strips of split mica used as peephole windows in high-temperature furnaces and stoves. They are cut to size and polished, offering heat resistance without melting or cracking. These strips are classified under tariff item 6814.90.00 as worked mica articles.
6814.90.00Phlogopite Mica Lantern Globes
Phlogopite mica lantern globes are molded globes made from phlogopite mica, which allows light transmission while resisting weather and heat. They are used in outdoor lanterns and are shaped to fit specific lamp designs. These globes are classified under tariff item 6814.90.00 as articles of worked mica.
6814.90.00Reconstituted Mica Gaskets and Seals
Reconstituted mica gaskets and seals are die-cut from agglomerated mica sheets, used for sealing high-pressure steam pipes and valves. They provide excellent heat resistance and compression strength. These gaskets are classified under tariff item 6814.90.00 as articles of reconstituted mica for industrial sealing.
6814.90.00Split Mica Capacitor Dielectrics
Split mica capacitor dielectrics are ultra-thin layers of split mica, silvered on one side, used as dielectrics in high-frequency capacitors. They are precision-cleaved to achieve consistent thickness. These dielectrics are classified under tariff item 6814.90.00 as worked mica articles before final capacitor assembly.
6814.90.00Split Mica Stove Doors
Split mica stove doors are pre-cut panels of split mica fitted into frames for viewing ports in wood stoves and fireplace inserts. They are transparent and heat-resistant, allowing users to see the fire. These panels are classified under tariff item 6814.90.00 as other worked mica articles for heating appliances.
6814.90.00Worked Muscovite Mica Condenser Foil
Worked muscovite mica condenser foil is extremely thin, cleaved muscovite mica foil (0.001-0.005mm) used for stacking in RF power capacitors. It is precision-split to achieve uniform thickness and high dielectric strength. This foil is classified under tariff item 6814.90.00 as precision worked mica for electronics.