3506680LE6KL Nylon Pipe is a high-pressure pneumatic tube used in the air brake circuit of JAC HFCN721 light truck. It transports compressed air between brake control components and air chambers to transmit brake signal pressure. This aftermarket replacement pipe fixes slow brake reaction, continuous air pressure drop and brake alarm faults caused by material embrittlement, split cracks and loose connector sealing of aged nylon pipes. Stable air delivery maintains consistent braking performance and driving safety for light trucks with frequent braking in urban delivery scenarios.
Product Advantages Premium nylon raw material delivers excellent burst pressure resistance and low-temperature toughness. It resists corrosion from condensed water and trace oil inside the air circuit. The pipe retains stable dimension under cyclic pressure change and allows proper bending for routing layout. Every nylon pipe passes air tightness and pressure impact test before shipment, standard tube size compatible with original quick push connectors.
| Item | Parameter |
|---|---|
| Part Number | 3506680LE6KL |
| Product Name | Air Brake Nylon Pipe |
| Compatible Model | JAC HFCN721 Light Truck |
| Material | High Pressure Nylon |
| Feature | Compressed Air Transfer, Pressure Resistant, Anti-Corrosion, Tight Seal |
| MOQ | Negotiable |
| Application | Pneumatic Air Brake Pipeline Assembly |
Applicable Models Fit for JAC HFCN721 series light-duty commercial trucks, widely used for short haul cargo distribution and township logistics.


FAQ
Q1: How to identify air leakage on this nylon brake pipe?
A1: Audible hissing noise near the pipeline, air gauge pressure falls rapidly and the air pump keeps running.
Q2: What installation error will shorten the nylon pipe service life?
A2: Sharp bending, friction against chassis metal edges and proximity to hot engine parts.
Q3: What operation is required when assembling nylon pipe with quick fittings?
A3: Cut the pipe squarely without burrs and push fully into the fitting to achieve reliable sealing.