The coupling allows to establish a connection by simply fitting both coupling parts into each other. Before load relieving of the coupling seats the pressure- and vacuum tight coupling is sealed inside with an O-ring during the coupling process. The coupling is forced to be open in coupled position. If both coupling sides are separated again the sealing seats shut o automatically. All couplings are temperature-resistant from -40 °C to +80 °C. The suitable connecting parts for DILO couplings must be ordered separately. Technical data