The Pentair Sta-Rite System 3 Drain Plug 2" O-Ring (35505-1424) is a direct Drain Plug O-Ring Replacement. Allow your filter to drain properly without leaking. Fits the Pentair Sta-Rite models S7M120, S7M400, S8M150, S8M500, S7D75, S8D110, S8S70, S7S50, PTM50, PTM70, and PTM100.


  • Drain Plug O-Ring Replacement.
  • 2" O-Ring Diameter.
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