8484.20.00.00
Mechanical seals
Classification path
- Gaskets and similar joints of metal sheeting combined with other material or of two or more layers of metal; sets or assortments of gaskets and similar joints, dissimilar in composition, put up in pouches, envelopes or similar packings; mechanical seals
- Mechanical seals
Rates of duty
- General (MFN)
- 3.9%
- Column 2Cuba, North Korea, Russia, Belarus
- 45%
- Unit of quantity
- No.
Trade agreement rates
Related lines in heading 8484
About heading 8484
Gaskets and similar joints of metal sheeting combined with other material or of two or more layers of metal; sets or assortments of gaskets and similar joints, dissimilar in composition, put up in pouches, envelopes or similar packings; mechanical seals
Heading 8484 covers gaskets and similar joints made of metal sheeting combined with other material or of two or more layers of metal, plus sets or assortments of such gaskets put up in pouches, envelopes or similar packings, and mechanical seals. The heading splits three ways: metal-combination gaskets and joints, mechanical seals, and a residual other line. All three lines are fully declared at the 8-digit level, so classification turns on what the article is rather than on further subdivision.
Full guide to heading 8484Products in this heading
- Automotive head gasket made of metal sheeting laminated with fiber or rubber facing
- Spiral-wound metal gasket with a soft filler layer for a pipe flange
- Multilayer steel exhaust gasket for an engine manifold
- Mechanical shaft seal (mechanical face seal) for a pump
- Mechanical seal cartridge assembly for a process pump or agitator
- Assortment pack of assorted gaskets of different composition in a pouch or envelope
- Metal-jacketed cylinder head gasket for a diesel engine
- Gasket set for an engine overhaul packed as a matched assortment
Frequently asked questions
What is the HTS code for a metal multilayer exhaust gasket?
A gasket of metal sheeting combined with other material, or of two or more layers of metal, is classified under 8484.10.00.00 and carries a general (MFN) rate of 2.5%.
What is the duty on a mechanical seal for a pump?
Mechanical seals are classified under 8484.20.00.00 at a general (MFN) rate of 3.9%.
How do I classify a mixed pack of assorted gaskets in an envelope?
Sets or assortments of gaskets dissimilar in composition, put up in pouches, envelopes or similar packings, fall in heading 8484; if the set is not described by the gasket or mechanical seal lines, use the residual line 8484.90.00.00 at a general (MFN) rate of 2.5%.
Source: USITC Harmonized Tariff Schedule, retrieved October 21, 2026.