PTFE O-Ring for Hydraulic Cylinder Seals
Polytetrafluoroethylene (PTFE) O-ring providing low-friction sealing in hydraulic cylinders for heavy machinery. Falls under HTS 3926.90.4510 as a plastic seal from polymers of heading 3901-3914. Ideal for high-pressure, non-lubricated applications.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If chemically modified PTFE not covered specifically
Modified polymers go to 'Other' per note (a)(3); unmodified PTFE stays specific.
If imported as component of hydraulic excavator
Parts of construction machinery classified by end-use in Chapter 84.
If reinforced with rubber backing
Rubber-dominant composites shift to Chapter 40 by predominant material.
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Import Tips & Compliance
• Certify PTFE purity (95%+ monomer) per subheading note (a)(1) to prevent fallback to copolymer 'Other'
• Declare AS568 standard sizes if applicable for easier verification
Related Products under HTS 3926.90.45.10
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PEEK O-Ring for Aerospace Actuators
Polyetheretherketone (PEEK) high-temp O-ring sealing actuators in aircraft systems. 3926.90.4510 for engineering plastic seals.
PVC O-Ring for Plumbing Fixtures
Polyvinyl chloride (PVC) O-ring sealing compression fittings in plumbing. 3926.90.4510 plastic seal.
Nitrile Rubber O-Ring for Automotive Fuel Injectors
A synthetic rubber O-ring made from acrylonitrile-butadiene (NBR) polymer classified under Chapter 39, used to seal fuel injector connections in vehicle engines. It falls under HTS 3926.90.4510 as an O-ring gasket or seal of plastics. Designed for high resistance to oils and fuels in automotive applications.
Viton Fluoroelastomer O-Ring for Chemical Processing
High-performance O-ring from fluoropolymer (FKM/Viton) for sealing valves in chemical plants, resistant to harsh acids and high temperatures. Classified in 3926.90.4510 as a plastic O-ring seal due to its synthetic polymer base from headings 3901-3914. Ensures leak-proof operation in corrosive environments.
Polyurethane O-Ring for Pneumatic Valves
Cast polyurethane O-ring for sealing pneumatic control valves in automation systems, offering abrasion resistance. Classified as plastic O-ring under 3926.90.4510 from polyurethane polymers in 3909.50. Meets Chapter 39 for other plastic seals.