Fire-Resistant Coated Cork Insulation Disks
Solid cylindrical disks of compressed cork with intumescent coating for pipe insulation and fire barriers. Classified in HTS 4504.10.20.00 as insulation disks explicitly covered under compressed cork provisions. The coating activates in high heat for added safety.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If not compressed or insulation-specific
Other agglomerated cork cylinders/disks without compression or insulation function under 4504.90.
If containing refractory materials for high-temp use
Refractory bricks/blocks with cork-like aggregates fall under Chapter 69.
If plastic tube sections replace sheet form
Plastic fittings for pipes, even with cork lining, primarily classified as plastics.
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Import Tips & Compliance
• Provide fire rating certifications (e.g
• ASTM E84) to validate insulation and coating claims
• Declare if disks fit 'solid cylinders including disks' precisely to match the tariff description
• Monitor coating thickness; functional coatings stay in 4504, decorative may shift to Chapter 32 paints
Related Products under HTS 4504.10.20.00
Compressed Cork Insulation Sheets
These are rigid sheets made from compressed agglomerated cork particles, often used for thermal and acoustic insulation in walls and roofs. They fall under HTS 4504.10.20.00 as they are specifically classified as insulation products from compressed cork, coated or not. The material's natural properties provide excellent sound absorption and heat resistance.
Coated Compressed Cork Wall Insulation Panels
Pre-cut panels of compressed cork with a protective coating, ideal for interior wall insulation in residential and commercial buildings. Classified under HTS 4504.10.20.00 due to their compressed cork composition and primary function as thermal insulation. The coating enhances moisture resistance without altering the base classification.
Uncoated Compressed Cork Acoustic Insulation Boards
Dense boards manufactured from compressed cork granules for superior soundproofing in studios and theaters. They qualify for HTS 4504.10.20.00 as uncoated insulation made from agglomerated compressed cork. Their porous structure effectively dampens noise vibrations.
Compressed Cork Roof Insulation Strips
Narrow strips of compressed agglomerated cork designed for under-roof thermal insulation in construction. Falls under HTS 4504.10.20.00 as strip-form insulation from compressed cork, suitable for both coated and uncoated variants. Provides natural fire resistance and sustainability.
Compressed Cork Thermal Break Panels
Panels from compressed cork used as thermal breaks in steel structures to prevent heat bridging. HTS 4504.10.20.00 applies as coated or uncoated insulation plates of agglomerated compressed cork. Essential for energy-efficient building envelopes.
Eco-Friendly Compressed Cork Floor Underlayment
Thin sheets of compressed cork serving as sound and thermal underlayment beneath flooring. Falls under HTS 4504.10.20.00 for its insulation properties from agglomerated compressed cork, whether coated or not. Popular for green building certifications.