Pentair Challenger Square O-Ring 10.275" Pump Seal | 355329

Pentair Challenger Square O-Ring 10.275" Pump Seal 355329

Square O-ring seal for Pentair Challenger pumps. Helps prevent leaks and maintain proper pump sealing. Durable replacement.

Features

• Restores a tight pump seal to help prevent leaks
• Square-profile design for proper housing fit
• Durable rubber construction for pool and spa environments
• Maintains pump efficiency and pressure performance
• Designed for Pentair Challenger pump applications

Description

The Pentair Challenger Square O-Ring is a replacement sealing component designed to maintain a secure, leak-resistant connection within Challenger pump assemblies. Its square-profile design provides a precise fit between pump housing components, helping preserve system pressure and operational efficiency.

Made for durability in pool and spa environments, this O-ring resists wear from chemicals and regular system use. It’s an essential maintenance part that helps extend pump life and ensures dependable performance during routine service or repair.

Pro Tip

Apply a silicone-based pool lubricant when installing the O-ring to improve sealing and prevent premature wear. Never install seals dry.

Installation Tips

Turn off pump power and relieve system pressure before installation. Clean sealing surfaces and remove old debris before installing the new O-ring. Ensure proper alignment to avoid pinching.

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.