Super-Pro | O-318-9 | WFE 700 Challenger Pump Lid O-Ring

This replacement pump lid O-ring is designed for compatible WFE, Model 700, and Challenger pump applications manufactured after November 1998. Installed beneath the pump strainer lid, it creates a watertight seal that helps prevent air from entering the suction side of the pump and water from leaking around the cover. It provides an aftermarket replacement option for several compatible Pentair and Pac-Fab pump assemblies.

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Key Features

• Replacement pump strainer lid O-ring

• Fits compatible WFE / WhisperFlo pump applications

• Compatible with Model 700 HydroPump lids

• Fits applicable Challenger pumps after 11/1998

• Cross-references to Pentair/Pac-Fab 350013 and 352600

• Approximately 5-7/8" ID x 6-3/8" OD x 1/4" thick

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Product Overview

The O-318-9 seals the connection between the pump strainer housing and lid, helping the pump maintain proper suction during operation. It is commonly used on compatible newer-style WFE/WhisperFlo assemblies manufactured after November 1998, as well as Model 700 and applicable Challenger pump configurations.

This O-ring cross-references with several OEM applications, including Pentair 350013 and 352600. Because similar pumps may use different lid and O-ring configurations depending on production date, verify the existing pump model, lid style, and manufacturing period before replacement.