| 摘要 |
<p>The wall-box is for cables or pipes having a sheath tube inserted in the wall opening, and sealing material, plastic at least during the installation work, between tube and wall. Two external flanges on the tube are pressed against the outside of the wall, one at least of them having an annular piston sliding on the tube under the action of a clamping mechanism and with a seal on the side of the flange towards the sealing material and protruding radially beyond the flange, so as to compress the material. On the side towards the material (5) and before the flange (9) forming the annular piston is an annular face (15). The dia. increases in the axial direction from the material to the flange, so as to form a widening bed for a sealing ring (13) sliding or rolling on it in the axial direction.</p> |
