Cork Lab Funnel Wafers

Natural cork wafers forming seats in laboratory glass funnels for filter papers. HTS 4503.90.20.00 as cork wafers; chemical resistant. Lab standard.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳ChinaFree+35.0%35%
🇲🇽MexicoFree+10.0%10%
🇨🇦CanadaFree+10.0%10%
🇩🇪GermanyFree+10.0%10%
🇯🇵JapanFree+10.0%10%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

7017.90.50.00Higher: 41.7% vs 35%

If with lab glassware

Glass labware fittings Chapter 70.

6909.90.00.00Higher: 39% vs 35%

If ceramic lab seats

Ceramic labware Chapter 69.

4504.90.00.00Same rate: 35%

If agglomerated lab wafers

Granular cork is 4504.

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

Chemical compatibility certs

Avoid glassware sets (7017)

Lab grade purity proof

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.