Which of the following is used to keep water away from the bearing housing in pumps?

In the context of pumps, water flingers are designed specifically to keep water away from bearing housings. They act as a physical barrier that uses centrifugal force to throw water away from the bearings during the pump's operation. By doing so, they help ensure that the bearing housing remains dry, which is essential for preventing corrosion, wear, and other potential damage that could occur if water were to enter this area.

Mechanical seals, while they serve a different purpose by preventing fluid leakage from the pump shaft, do not actively function to repel water away from the bearings in the same manner as water flingers. Oil barriers and grease fittings are related to lubrication and protection of bearings but do not directly address the issue of keeping water out of the bearing housing. Oil barriers may prevent oil leaks, and grease fittings allow for lubrication, but neither provides the specific functionality of directing water away from bearings like water flingers do.