Waterproof manhole covers , which are supplied with a special rubber ring , which acts not only as sealing, but also as sound-absorbing
WATERTIGHT
Watertight Manhole Covers with water sealing gasket and tightening screws
For electric , telecommunication , Hand holes and Manhole Covers
![All Watertight Manhole Covers must be installed by fixing screws](gfx/watertight_a.png)
![Rubber Ring, Water sealing gasket](gfx/watertight_b.png)