Pentair Pool O-Ring #338

The Pentair Pool O-Ring #338 is a genuine replacement sealing ring for select Pentair Pool, Sta-Rite, and Rainbow equipment. It helps maintain a leak-resistant seal in compatible pool and spa components, supporting reliable operation and helping prevent water loss.

Part Number: R170055
Reference: O-Ring #338

Key Features

• Genuine Pentair replacement part
• Designed for compatible pool and spa sealing applications
• Helps reduce leaks caused by worn or flattened O-rings
• Suitable for routine maintenance and repair work

Compatibility

Fits select Pentair, Sta-Rite, and Rainbow equipment. Always confirm compatibility by matching the part number R170055 and O-Ring #338 to your current part, equipment label, or owner’s manual before ordering.

Installation Tips

1. Turn off equipment and relieve system pressure before service.
2. Remove the old O-ring and clean the sealing groove or surface.
3. Lightly apply a pool-safe silicone lubricant if recommended for your equipment.
4. Set the new O-ring evenly in place and reassemble carefully.
5. Restart the system and inspect for leaks.

🛠️ Replacing a worn O-ring can help protect pumps, filters, valves, and other pool equipment from leaks and unnecessary wear.