Premium Clear Split Block Mica
Premium clear split block mica features high optical clarity in sheets ≤0.508 mm thick, split to exact tolerances without shaping. Used in vintage stove windows and scientific instruments for its transparency and durability. Meets HTS 2525.10.0010 criteria as unworked split block per statistical note (a).
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If laminated with glass for safety glazing
Composite mica-glass products become safety glass under Chapter 70.
If packed as splittings rather than blocks
Book-form or loose pack configuration reclassifies as mica splittings for agglomeration.
If punched for condenser plates
Any punching or shaping beyond splitting constitutes worked mica.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Request clarity grading certificates (e.g
• 'window grade') to support value declarations
• Avoid retail packaging; bulk shipment maintains crude material status vs consumer products
• Check for asbestos contamination via testing, as trace fibers could invoke hazardous material rules
Related Products under HTS 2525.10.00.10
Split Block Muscovite Mica
Split block muscovite mica consists of thin sheets of muscovite mica, not exceeding 0.508 mm in thickness, split and selected within a 0.203 mm tolerance but not cut or stamped to specific dimensions. This crude form is ideal for further processing into electrical insulators or glazing due to its dielectric properties and heat resistance. It falls under HTS 2525.10.0010 as it precisely matches the definition of split block mica.
Split Block Phlogopite Mica Sheets
Phlogopite split block mica is rifted into uniform thin sheets under 0.508 mm thick, selected to tight tolerances without further shaping. Prized for superior thermal stability up to 1000°C, it's used in high-temperature gaskets and furnace linings. Classified in HTS 2525.10.0010 for its unworked split block form per chapter definitions.
Industrial Grade Split Block Mica
Industrial split block mica is crude mica split into precise thin laminae under 0.508 mm, toleranced to 0.203 mm, ready for manufacturing into components. Commonly sourced from India or Madagascar, it's essential for capacitors and peizo devices. HTS 2525.10.0010 covers this unprocessed form explicitly excluding cut or stamped products.
High Purity Split Block Mica Flakes
High purity split block mica flakes are meticulously split to under 0.508 mm thickness with 0.203 mm uniformity, free of inclusions for sensitive applications. Essential precursor for semiconductor wafer spacing and RF windows. HTS 2525.10.0010 applies to this rifted, unselected crude form.