| Neoprene seals ensure the watertightness between the water boxes and the end plates. |
| The standard tests for cells, including those for watertightness, are set by a body called the International Electrotechnical Commission. |
| What's more, its watertightness allows the treatment by way of atomization. |
| Again the work has to be done uniformly well, not only for appearance sake but because of the necessity of watertightness. |
| The wall-window assemblies were subjected to watertightness performance tests that mimic significant wind-driven rain loads. |
| To prevent such pollution, Onyx has been gradually installing special drainage and watertightness systems. |
