"Imperial" Air Brake Tubing Designed specifically for air brake applications. Not listed in FMVSS 106. Tubing Construction: SAE J844 Type A, single wall, extruded nylon. Temperature Range: -40 F.° to 200° F. Hose Outside Diameter: 1/8". Color: Black. Wall Thickness: 0.023. Maximum Working Pressure: 150. Minimum Burst Pressure: 1000. Minimum Bend Radius: 3/8". Length: 100".