Valve Stem Seals
Vulcanized rubber seals for automotive valve stems preventing oil leakage into combustion chambers. HTS 4016.93.50 other gaskets, high-temp synthetic rubber. Not Chapter 84 or hard rubber.
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Import Tips & Compliance
• SAE J200 classification docs aid verification
• Avoid kits with metal valves to stay in Chapter 40
• Declare HNBR material if applicable for specialty rates
Related Products under HTS 4016.93.50
Automotive Engine Gasket Set
A set of vulcanized rubber gaskets designed for sealing engine components in passenger vehicles, preventing oil and coolant leaks. Classified under HTS 4016.93.50 as other gaskets not specified elsewhere, distinct from hard rubber and excluding conveyor belts or tires. Made from synthetic rubber compounds for high-temperature resistance.
HVAC System Washer Seals
Vulcanized rubber washers and seals used in air conditioning units for duct connections and compressor housings. Falls under HTS 4016.93.50 as other unspecified gaskets and seals of vulcanized rubber, not hard rubber. Ensures airtight and watertight joints in residential HVAC equipment.
Plumbing Pipe O-Ring Seals
Circular vulcanized rubber O-rings for sealing threaded pipe joints in residential plumbing systems. Classified in HTS 4016.93.50 as other gaskets, washers, and seals, made from nitrile or EPDM rubber for water resistance. Prevents leaks in PVC or metal pipe connections.
Industrial Pump Gaskets
Flat vulcanized rubber gaskets for flange connections on centrifugal pumps in chemical processing plants. HTS 4016.93.50 covers these as other unspecified seals, using neoprene for corrosion resistance. Not hard rubber and excludes Chapter 84 pump parts.
Window Glass Rubber Seals
Extruded vulcanized rubber seals for framing automotive or building window glass, providing weatherproofing. Under HTS 4016.93.50 as other gaskets and seals, EPDM compound for UV resistance. Excludes hard rubber and textile-covered profiles.
Hydraulic Cylinder Seals
U-cup and piston seals of vulcanized rubber for hydraulic cylinders in heavy machinery. HTS 4016.93.50 for other non-hard rubber seals, polyurethane-blend for high pressure. Distinct from machinery parts in Chapter 84.