Connection device and fiber distribution box

In a device for in particular fluid-tight connecting multiple optical fiber cable receiving plastics micro-pipes to a fiber optic distribution box are provided: a supporting body, in particular made of plastic, which is attachable to the mounting and demounting of the optical fiber junction box and having a plurality of channels for receiving respectively a micro tube; at least one channel arranged in a clamping device for securing the zugkraftaufnebmenden micro tube to the supporting body; at least one arranged in a duct seal for sealing the micro tube with respect to the support body.