Pentair 39006000z Buna-n Volute O-ring Pool Pump

Product Description

The PENTAIR 39006000z is a Buna-N synthetic rubber volute o-ring designed as a sealing component for pool and spa pump assemblies. This o-ring seats between the pump volute and the housing, creating a leak-free barrier that maintains system pressure and prevents water from bypassing the pump cavity. Constructed from Buna-N (nitrile) rubber, it resists degradation from chlorinated water, common pool chemicals, and continuous submersion exposure. Pool and spa service technicians install this part as a routine maintenance replacement whenever a volute seal shows cracking, compression set, or visible leakage around the pump body.

This o-ring is used in residential and light commercial pool and spa pump installations. It is specifically designed to fit Pentair American Products Ultra-Flow pool pumps. Typical installation scenarios include scheduled preventive maintenance, post-winterization inspection, or pump rebuild following loss of prime or visible water leakage at the volute joint. The part is a direct OEM-style replacement that restores a proper compression seal without modification.

Key Features

• Buna-N (nitrile) synthetic rubber construction resists chlorinated water and pool chemicals
• Seats at the volute-to-housing interface to prevent leakage and maintain pump efficiency
• OEM-style replacement for the Pentair American Products Ultra-Flow pump series
• Restores proper compression seal during pump rebuild or routine maintenance

Compatibility

Fits Pentair American Products Ultra-Flow pool pumps.

Installation Notes

Pool and spa service technicians should shut off all electrical power to the pump at the breaker and relieve system pressure before disassembling the volute housing. Remove the old o-ring completely and inspect the seating groove for debris or corrosion before installing the replacement. A light application of a silicone-based o-ring lubricant, not petroleum-based grease, aids seating and extends seal life. Installation should comply with applicable local codes and the pump manufacturer service guidelines.

Technical Specifications

• Material: Buna-N (nitrile) synthetic rubber
• Dimensions: 6 x 4 x 4 inches

Standard Information

• Brand: PENTAIR
• Manufacturer Part Number: 39006000z