Hayward Valve O-Ring for ProSeries Sand Filters and MaxFlo Pumps | GMX600F Suction Pool Cleaners A failed or deteriorated return

A failed or deteriorated return fitting can result in leaks at the wall fitting

your system requires 2 cartridges for a complete service

Brand Equipment Line Model / Part Number Notes Pentair 300 Off-Line Feeder — 300 Series R1710161 300 & 320 Replacement Kit Pentair 320 In-Line Feeder — 320 Series R1710961 300 & 320 Replacement Kit Compatibility is based on Pentair parts documentation and available OEM records

This is the same 2000-series testing platform trusted by pool professionals

Hayward Valve O-Ring for ProSeries Sand Filters and MaxFlo Pumps | GMX600F Suction Pool Cleaners A failed or deteriorated returnThe Hayward Valve O Ring (GMX600F) is the OEM replacement sealing O ring for the VariFlo and VariFlo XL multiport control valves fitted to Hayward ProSeries sand filters and MaxFlo pump models. IMPORTANT: LUBRICATION REQUIRED SOLD SEPARATELY Always lubricate this O ring with a silicone based lubricant before installation. Browse our Pool Plumbing Lubricants for a compatible silicone lubricant. This O ring forms the pressure seal at its designated