Pentair R1722400 Lid to Housing O-Ring | High Capacity Chlorinator

The Pentair R1722400 Lid to Housing O-Ring provides the seal between the lid and body of your inline chlorinator. Also, if your O-ring is flattend, cracked, or swollen from chlorine exposure. Then your pump will experience water seepage or pressure loss. Why is the Pentair R1722400 Lid to Housing O-Ring so important? The R172240 O-Ring seals the chlorinator lid to the housing, prevents leaks and air intrusion during operation. It is important to inspect O-Rings every few years because a compromised seals will reduce system efficiency. Also, this exposes the lid threads to chemical damage over time. Pentair manufactures this OEM O-Ring with durable materials that withstand high chlorine concentration and constant chemical exposure.