What function does an O-ring serve in pool equipment?

An O-ring serves a crucial function in pool equipment by providing a waterproof seal that helps prevent leaks. Typically made from rubber or other sealing materials, O-rings are designed to fit snugly into grooves between two surfaces, creating a barrier that stops water from escaping around connections or joints in pumps, heaters, filters, and other components.

The importance of this function cannot be overstated; without effective sealing, water could leak from equipment, leading to not only wasted water but also potential damage to the surrounding area and increased maintenance costs. By ensuring that these seals are intact and functioning properly, pool operators can maintain the efficiency of the equipment as well as the safety and cleanliness of the pool itself.

The other functions listed do not align with the primary role of an O-ring, which specifically pertains to leakage prevention rather than draining, connecting pipes, or filtering.