PN#020138-7  SKU#17155  Nylon Tubing, Blue. Length: 500′. Hose Outer Diameter: 1/2″. Color: Blue. SAE Type: B. For air brake systems only – Not for fuel line applications. SAE Type A tubing is single wall extruded non-reinforced nylon. SAE Type B tubing has seamless extrude nylon core with fiber reinforced protective nylon cover. Can be used with either air brake or nylon tube fittings. 150 psi maximum working pressure. Withstands temperatures of -40° to +200°F. Tubing meets SAE J844 and FMVSS 106 requirements.