ISO 23933:2006规定了在-55°C和135°C（-65°F和275°F）之间的温度和21 000 kPa（210 bar）（3 046 psi）或20 684 kPa（3 000 psi）的标称压力下，用于飞机液压、油和燃料系统的芳纶增强轻质聚四氟乙烯（PTFE）软管组件的要求。软管组件也适用于在飞机气动系统中相同的温度和压力限制下使用，在这些系统中，可以允许一些气体通过PTFE衬里的壁扩散。

ISO 23933:2006 specifies requirements for aramid reinforced lightweight polytetrafluoroethylene (PTFE) hose assemblies for use in aircraft hydraulic, oil and fuel systems at temperatures between -55 °C and 135 °C (-65 °F and 275 °F) and at a nominal pressure of 21 000 kPa (210 bar) (3 046 psi) or 20 684 kPa (3 000 psi). The hose assemblies are also suitable for use within the same temperature and pressure limitations in aircraft pneumatic systems where some gaseous diffusion through the wall of the PTFE liner may be tolerated.