Gaskets, washers and other seals
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Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Products classified under HTS 4823.90.80.00
Sulfite Process Paper Gaskets for Food Processing
Machine-glazed sulfite wrapping paper gaskets (per 4805.30 specs) for food processing valves and pumps. Low ash content and burst index qualify as seals under HTS 4823.90.8000.
Paper Gaskets for Automotive Oil Pans
Die-cut gaskets made from compressed paperboard or cellulose fiber material, designed to seal automotive oil pans and prevent leaks. These fall under HTS 4823.90.8000 as they are paper-based seals cut to specific shapes for industrial sealing applications, distinct from rubber or metal gaskets.
Cellulose Fiber Washers for Plumbing Fixtures
Washers cut from cellulose wadding or fiber webs, used in plumbing assemblies to create watertight seals around faucets and valves. Classified under HTS 4823.90.8000 as shaped cellulose fiber articles functioning as seals, separate from plastic or metal washers.
Paperboard Gaskets for Electrical Junction Boxes
Precision-cut paperboard gaskets providing dust and moisture seals for electrical enclosures and junction boxes. These qualify for HTS 4823.90.8000 as other paperboard seals cut to size/shape, valued for their compressibility and non-conductive properties.
Compressed Paper Washers for Hydraulic Systems
High-density compressed paper washers used in hydraulic cylinders and valves for pressure sealing. HTS 4823.90.8000 covers these as paper pulp-based seals cut to precise dimensions, offering cost-effective alternatives to synthetics.
Cellulose Sealing Washers for HVAC Ductwork
Die-cut cellulose fiber washers sealing joints in heating, ventilation, and air conditioning duct assemblies. These paper-based seals under HTS 4823.90.8000 provide airtight barriers without chemical adhesives.
Paper Pulp Gaskets for Industrial Pumps
Molded paper pulp gaskets custom-cut for industrial pump housings, resistant to oils and moderate pressures. Classified in HTS 4823.90.8000 as other paper pulp articles specifically shaped as seals.
Kraft Paper Washers for Machinery Flanges
Washers cut from sack kraft paper meeting 4804.21 specifications, used as temporary seals on machinery flanges during assembly. HTS 4823.90.8000 applies to these cut-to-shape high-strength paper seals.
Fluting Paper Seals for Corrugated Packaging
Semichemical fluting paper cut into gasket shapes for sealing corrugated box manufacturing equipment. Meets 4805.11 specs for crush resistance; classified as seals under HTS 4823.90.8000 when cut to shape.
Recovered Paper Testliner Seals for Recycling Equipment
Testliner paper from recovered waste (per 4805.24 specs) cut into seals for recycling machinery conveyors. Mullen burst ≥2 kPa·m²/g qualifies under HTS 4823.90.8000 as recycled paper seals.