Silicone O-Ring for Plumbing Fixtures
Flexible silicone rubber O-ring for sealing faucet and valve connections in residential plumbing. It qualifies under HTS 4016.93.50.10 as a vulcanized rubber seal (O-ring) not covered by exclusions like Chapter 64 footwear. Food-grade variants common for potable water systems.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If made from plastic/polymer rather than qualifying vulcanized rubber
Plastic fittings and seals fall under Chapter 39, excluding rubber per Chapter 40 notes.
If when integral to pipe fittings of iron/steel
Metal pipe fittings with rubber seals classify by principal material under Chapter 73.
If
Boat/vessel gaskets/seals have separate provisions recognizing marine applications.
Not sure which classification is right?
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Import Tips & Compliance
• Obtain NSF/ANSI 61 certification for potable water contact to expedite FDA/USDA clearance
• Label with precise dimensions (AS568 standard sizes) to confirm O-ring classification vs generic seals
• Ship in consumer packaging to avoid bulk 'parts' perception leading to higher duties
Related Products under HTS 4016.93.50.10
Nitrile O-Ring for Automotive Fuel Injectors
A vulcanized nitrile rubber O-ring designed for sealing fuel injector connections in gasoline engines. It falls under HTS 4016.93.50.10 as an O-ring, which is a specific type of gasket, washer, or seal made from vulcanized rubber other than hard rubber. The circular cross-section and sealing function classify it here.
Viton O-Ring for Hydraulic Cylinder Seals
High-temperature resistant Viton (FKM) O-ring used in hydraulic cylinders for heavy machinery. Classified under HTS 4016.93.50.10 due to its vulcanized rubber composition and role as a precision seal with circular cross-section. Excludes hard rubber per Chapter 40 notes.
EPDM O-Ring for HVAC Compressor
Weather-resistant EPDM rubber O-ring sealing refrigerant lines in air conditioning compressors. Falls under HTS 4016.93.50.10 as other vulcanized rubber O-rings used for pressure sealing. Not electrical appliances excluded by Chapter notes.
FFKM O-Ring for Chemical Processing Pumps
Perfluoroelastomer (FFKM) O-ring for extreme chemical resistance in industrial pump seals. Classified as HTS 4016.93.50.10 for its vulcanized rubber O-ring form, excluding hard rubber. Handles corrosive acids and high pressures.
Neoprene O-Ring for Marine Engine Seals
Saltwater-resistant neoprene CR O-ring for outboard motor water pump seals. HTS 4016.93.50.10 applies to this vulcanized rubber O-ring gasket not covered by Chapter 89 exclusions. Provides UV and hydrolysis protection.
NBR O-Ring Assortment for General Industrial Use
Standard nitrile butadiene rubber (NBR) O-ring kit in various AS568 sizes for maintenance applications. Falls under HTS 4016.93.50.10 as assorted vulcanized rubber O-rings (other seals). Common in MRO inventories.