Device for holding cable or pipe has protecting tube, fitted in concrete slab on its upper side, with concisely locking end whose inner diameter is larger than outside diameter of sealing ring

摘要

Holding device has protecting tube (1) containing inner tube (2), with two axially arranged sealing rings (3) at a distance from each other, with internal seal mechanism from which cables or pipes can be inserted. Protecting tube, fitted in concrete slab on its upper side, has concisely locking end whose inner diameter is larger than outside diameter of the sealing ring.