Pentair Lid O‑Ring #436 (5.85″ × 0.275″) | 350013Z

Pentair Lid O‑Ring #436 (5.85″ × 0.275″)

OEM‑grade Pentair Lid O‑Ring #436 seals pool pump lids to prevent leaks and maintain proper circulation.

Features

• OEM lid seal designed for Pentair pool pump lids.
• 5.85″ ID × 0.275″ cross‑section for accurate fit.
• Durable Buna‑N rubber resists pool chemicals and wear. 

Description

This Pentair Lid O‑Ring #436 provides a reliable seal for pump lids and strainer covers on compatible Pentair pumps, helping prevent water and air leaks that reduce system performance. Made from tough, flexible rubber, the O‑ring resists chemical exposure and compression set. Replacing a worn or cracked O‑ring restores proper sealing and helps maintain efficient pump priming and flow. 

Pro Tip

Before seating the O‑ring, apply a thin layer of pool‑safe silicone lubricant to improve longevity and make future lid removal easier. A clean sealing surface and proper lubrication extend service life.

Installation Tips

Clean the lid sealing surface and track before installing. Lubricate the O‑ring lightly with pool‑safe silicone lube for easier installation and improved sealing. Ensure correct orientation and check fit before running the pump.

We want you to have quick and easy access to warranty information for all the brands we carry. Please click on the links below to view each manufacturer’s warranty page:

• Pentair Warranty
  
• A&A (Pentair In-Floor) Warranty
  
• Fluidra Warranty (Zodiac / Jandy / Polaris / Caretaker)
  
• Paramount Warranty
  
• BlueSquare Warranty
  
• Hayward Warranty
  
• All Other Manufacturer Warranties
  

Note: Warranty coverage, registration, and service terms are provided directly by the manufacturer. Please review the details carefully to ensure proper understanding of coverage and claim procedures.