Sta-Rite – Pump Strainer Lid O-Ring R350013 (IntelliFlo / WhisperFlo / WhisperPro) - 7010709

Sta-Rite – Pump Strainer Lid O-Ring R350013 (IntelliFlo / WhisperFlo / WhisperPro)

This is the genuine Sta-Rite / Pentair replacement lid O-ring (part reference R350013) for the pre-filter strainer housing on a wide range of Pentair and Sta-Rite inground pool and spa pumps. It seats between the transparent strainer lid and the pump body, creating a watertight seal that keeps the pump primed and leak-free. Replacing a worn, flattened, or cracked O-ring is one of the most effective ways to stop lid-area leaks and restore efficient pump operation.

Compatibility

This O-ring fits the Sta-Rite WhisperPro S5P5R as well as the broader Pentair family including WhisperFlo (new-style, post-11/98), WhisperFlo VST, IntelliFlo VS, VF, VS+SVRS, IntelliFlo i1 and i2, IntelliFlo 2 VST, Challenger High Flow and High Pressure, Pinnacle High Flow, EQ Series commercial pumps, and Waterfall models. Always verify your pump’s parts diagram calls for part number 350013 before ordering, as similar-looking O-rings exist for other models.

Why Genuine Matters

As an OEM Pentair/Sta-Rite part, this O-ring is manufactured to exact dimensional tolerances for the Lexan strainer lid assembly, ensuring a reliable, pressure-rated seal. Generic substitutes may differ slightly in cross-section thickness or compound hardness, leading to premature compression set or weeping leaks. Using the genuine article also keeps your pump warranty intact.

Installation

Installation is straightforward: remove the old O-ring, clean the groove, apply a thin film of pool-and-spa silicone lubricant around the new O-ring, seat it evenly in the lid channel, then hand-tighten the lid onto the pump. The manufacturer recommends lubricating the lid and O-ring each time the strainer basket is accessed. No special tools are required.