A comprehensive comparison between polyurethane (PU) and nylon (PA) pneumatic hoses

Introduction
Polyurethane (PU) and nylon (PA) are the two most commonly used materials for pneumatic hoses, and choosing between them often poses a dilemma. A thorough comparison of their characteristics can assist in making the best decision based on the application scenario.

Characteristic Comparison Table

Typical application scenarios

• Occasions where PU hose is preferred:

  • Applications involving continuous movement and frequent bending, such as robotic arms and drag chains.

  • The interior of equipment with compact space and requiring small-radius piping.

  • Light automation, electronic assembly, and other medium and low voltage environments.

  • In situations where it is necessary to observe the flow within a tube.

• Occasions where PA hose is preferred:

  • The factory's main gas supply pipeline and fixed pipeline system.

  • There is a machine tool environment contaminated with oil, cutting fluid, and other oil-based contaminants.

  • Processes with higher requirements for pressure and temperature resistance.

  • Outdoors or humid environments (benefiting from its excellent hydrolysis resistance).

Conclusion
There is no absolute "better", only "more suitable". If you pursue ultimate flexibility and wear resistance, choose PU; if you seek high strength, oil resistance, and stable shape, choose PA. In complex applications, the two are often used together in the same system.