Natural Cork Pipe Flange Washers
Large cork washers for sealing pipe flanges in low-pressure systems. Classified HTS 4503.90.20.00 as cork washers; compressible for easy installation. Common in agricultural plumbing.
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Import Tips & Compliance
• Pressure rating certifications required
• Size declarations prevent Chapter 39 gasket confusion
• Bulk import avoids 7307 pipe fitting classification
Related Products under HTS 4503.90.20.00
Natural Cork Gasket Washers
These are thin, circular washers made from compressed natural cork used as gaskets in machinery and plumbing to create seals. They fall under HTS 4503.90.20.00 as articles of natural cork specifically shaped as washers. The porous structure of cork provides excellent compressibility and sealing properties.
Cork Bottle Stopper Disks
Flat, disk-shaped pieces of natural cork used as stoppers or liners in wine and spirit bottles. Classified under HTS 4503.90.20.00 as cork disks, these provide airtight seals due to cork's elasticity. They are distinct from full cylindrical stoppers.
Cork Speaker Grill Wafers
Thin wafer-like sheets of natural cork cut into disks for use as protective grills on audio speakers. They are classified as cork wafers under HTS 4503.90.20.00 due to their flat, disk form and natural cork composition. Cork's acoustic properties help dampen vibrations.
Natural Cork Coaster Disks
Circular disks of natural cork used as drink coasters to absorb moisture and protect surfaces. These qualify under HTS 4503.90.20.00 as cork disks, valued for their natural water-resistant properties. They are typically 4 inches in diameter and simply cut.
Cork Jar Seal Washers
Ring-shaped washers from natural cork designed to seal glass jars for preserves and canning. Classified as cork washers under HTS 4503.90.20.00, they compress under lid pressure for airtight closure. Ideal for food preservation due to inert properties.
Cork Dialysis Filter Wafers
Ultra-thin natural cork wafers used in medical dialysis equipment as filter spacers. They fit HTS 4503.90.20.00 as cork wafers, leveraging cork's biocompatibility and porosity. Precisely cut for high-purity applications.