The Pentair 355331 Diffuser O-Ring is a genuine OEM replacement component made for SuperFlo VS/VST and Challenger pumps produced after 6/17/19. This O-ring forms a secure, watertight barrier inside the pump diffuser, preventing leaks that can undermine water flow and reduce system efficiency. Manufactured from resilient, chemically resistant rubber, it withstands prolonged contact with treated pool water without losing its sealing properties. As a fundamental part of routine pump upkeep, installing an authentic OEM O-ring like the 355331 ensures a precise fit, sustained pump performance, and uninterrupted water circulation throughout your pool or spa system.

Key Benefits

• Genuine OEM Seal: The Pentair 355331 diffuser O-ring is factory-specified for SuperFlo VS/VST and Challenger pumps, guaranteeing exact fitment and trusted compatibility.
• Guards Against Water Loss: Establishes a dependable, tight seal within the diffuser assembly, protecting system output and operational efficiency.
• Chemical-Resistant Rubber Composition: Crafted from premium rubber engineered to resist degradation from pool chemicals and sustained water exposure.
• Preserves Equipment Longevity: Stops leaks before they lead to pump inefficiency or component damage, safeguarding your investment over time.
• Key Preventive Maintenance Part: An indispensable item for scheduled service intervals, keeping pumps running safely and without operational disruptions.
• Promotes Consistent Circulation: Helps maintain the pressure and flow rates needed for thorough water filtration across the system.
• Quick, Accurate Installation: Built to Pentair factory dimensions for fast, confident replacement during pump servicing.

What's Included

• Pentair 355331 Diffuser O-Ring

Compatibility

• Pentair SuperFlo VS / VST Pumps
• Pentair Challenger Pumps
• Pentair Diffuser - 355949

Specifications

• Brand: Pentair
• Part Number: 355331

SEO Tags

pentair 355331
355331
355331 pentair diffuser o-ring superflo