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.
Import Duty Rates by Country of Origin
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If made primarily of plastic with rubber coating
Plastic fittings with rubber seals classify under Chapter 39 if plastic is the essential character.
If imported attached to pipe fittings
Assembled pipe fittings of iron/steel with seals fall under Chapter 73 as complete articles.
If containing asbestos fibers
Asbestos-reinforced seals have a specific subheading separate from other materials.
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
• Certify compliance with NSF/ANSI 61 for potable water contact to meet U.S. import standards
• Declare durometer hardness and chemical resistance in invoices for proper valuation
• Avoid bulk packaging that mimics Chapter 39 plastic fittings to prevent reclassification
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.
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.
Electrical Enclosure Gaskets
Silicone rubber gaskets for sealing NEMA-rated electrical junction boxes against dust and moisture. Classified HTS 4016.93.50 as other vulcanized rubber seals, excluding hard rubber electrical goods. Ensures IP65+ protection ratings.