O-ring Cap for Rainbow Chlorinator

The O-Ring Cap for Pentair Rainbow Chlorinator (R172009Z) is a replacement o-ring for the threaded cap on Pentair Rainbow automatic chlorinator models 300, 320, 322, 300-19, 300-29, and 300-29X. This o-ring seals the cap to the chlorinator body, preventing chemical-laden water from leaking from the top when the cap is in place. Replace when the cap develops a slow leak or when the o-ring appears cracked, compressed, or chemically degraded. Never use oil or petroleum-based lubricants on chlorinator o-rings -- use only silicone lubricant.

SKU: R172009Z