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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If as component of specific liquid pumps
Pump parts of Chapter 84 supersede when principal use identified.
If polymer content exceeds rubber characteristics
Other plastic articles cover synthetic seals failing rubber vulcanization tests.
If statistically reported under different rubber type
Same heading but different suffixes for silicone/specialty elastomers.
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Import Tips & Compliance
• Include chemical compatibility charts and DuPont/Kalrez equivalence statements for premium rubber verification
• Comply with HAZMAT shipping if residual chemicals present from manufacturing
• Certify not hard rubber via Shore hardness testing (<90A typically)
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.
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.
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.
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.