| 摘要 |
FIELD: machine building.SUBSTANCE: invention relates to finishing jobs, particularly, to sealing of structural rod outer free end. Structural element comprises shaping main case. The latter comprises main part with first cavity to accommodate outer end free part and second main part with main cavity to accommodate outer end free part. Besides it comprises relatively flexible peripheral case of bitumen or plastic of wall lining attached tightly to at least, in fact, main case to extend sideways therefrom. Note here that a liquid barrier is arranged between said main case and free outer end. It differs from know designs in that second main part forms open space above outer free end. Note also that said liquid barrier comprises seal nut squeezed between outer free end and second main part for hermetic seal of open space.EFFECT: guaranteed integrity and tightness. |
