Pentair R172009Z O-Ring - 343, Viton 3in Cap

What This Part Is Used For
The Pentair R172009Z O-Ring - -343, Viton 3in Cap is used to seal compatible Pentair 3in cap assemblies. It helps maintain a secure, leak-resistant connection.

Why This Part Matters
Viton material offers durability in demanding pool environments. Replacing damaged seals prevents water leaks and pressure loss. Proper sealing supports safe and efficient equipment operation.

Key Features and Specifications

• Manufacturer part number: R172009Z
• O-ring size: -343
• Material: Viton
• For 3in cap applications
• OEM Pentair replacement

Installation and Fitment Guidance
Remove old O-ring and inspect cap surfaces before installation. Seat evenly to avoid twisting. Confirm by manufacturer part number before ordering.

About the Pentair Brand
Pentair manufactures pool equipment designed for performance and longevity. Their OEM seals are matched to original equipment specifications. Pentair supports reliable system maintenance with quality replacement components. Professionals trust Pentair for dependable operation.

Common Service Context
Installed during cap resealing or filter service. Used when leaks are detected around large threaded caps.