Material: Polyurethane. Dimensions and tolerances to DIN 73378. Max. length 100m. Application: Pneumatic-tube for Pneufit-Push-In or Pneufit C connectors. Pu-tubes allow only a lower pressure than Pa-Tubes, but they need a smaller radius. Max. Operating Pressure: The pressures shown in the table are valid for -40°C up to +20°C. At higher temperature note follwing factors: Temperature 30 °C: Factor 0,83. Temperature 40 °C: Factor 0,72. Temperature 50 °C: Factor 0,64. Temperature 60 °C: Factor 0,57 (max. operating temperature).