PTFE-Lined High-Pressure Air Hose
A flexible hose with a polytetrafluoroethylene (PTFE) inner liner and plastic outer reinforcement for compressed air systems in industrial tools, rated at 27.6 MPa burst pressure. It qualifies for HTS 3917.31.00.00 based on its plastic composition and pressure specifications.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If lower burst pressure rating
Drops to general flexible hose subheading if pressure threshold not met.
If rubber outer layer predominates
Rubber-reinforced versions classify in Chapter 40 tubes of vulcanized rubber.
If sold as complete valve-hose assembly
Sets with valves or taps move to machinery appliances of plastics.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Certify PTFE as the predominant monomer (>95% per subheading note (a)(1)) in documentation
• Distinguish from low-pressure air hoses to prevent Customs shifting to 3917.39
• Ensure no metal fittings attached unless declared separately for special duty treatment
Related Products under HTS 3917.31.00.00
High-Pressure Nylon Fuel Line Hose
A flexible nylon-reinforced hose designed for automotive fuel delivery systems, capable of withstanding a minimum burst pressure of 27.6 MPa. It falls under HTS 3917.31.00.00 due to its flexible plastic construction and high-pressure rating, distinguishing it from lower-pressure hoses in other subheadings.
Reinforced Polyurethane Hydraulic Hose
A multi-layer polyurethane hose reinforced with textile braiding for hydraulic applications in heavy machinery, meeting the 27.6 MPa minimum burst pressure. Classified under HTS 3917.31.00.00 as a flexible plastic tube designed for high-pressure fluid transfer.
ECTFE Chemical Injection Hose
Ethylene chlorotrifluoroethylene (ECTFE) hose for chemical injection in oilfields, high 27.6 MPa burst. HTS 3917.31.00.00 applies.
High-Pressure PVDF Acid Hose
Polyvinylidene fluoride (PVDF) hose for acid transfer, 27.6 MPa burst flexible plastic tube under 3917.31.00.00.
Reinforced Polyethylene Pressure Test Hose
PE-reinforced hose for hydrostatic pressure testing, min 27.6 MPa, HTS 3917.31.00.00.
High-Pressure PPS Coolant Hose
Polyphenylene sulfide (PPS) hose for coolant in manufacturing, 27.6 MPa burst, 3917.31.00.00.