APC PS3865R 5/8 Inch Pump Shaft Seal for Ozone & Saltwater Pools

Keep your pool or spa pump running smoothly and leak-free with the APC PS3865R 5/8 Inch Pump Shaft Seal for Ozone & Saltwater Pools. Designed to withstand the demanding conditions of sanitized water systems, this heavy-duty mechanical shaft seal provides reliable performance across a variety of popular pool and spa pump brands.

🚩 PRO TIP: Always inspect the mating ceramic seat and clean the impeller hub thoroughly before installing a new shaft seal. Never touch the carbon and ceramic sealing faces with bare fingers, as skin oils can cause premature wear and leakage.

PRODUCT FEATURES & SPECIFICATIONS

• Brand: Aquatic Pool Company
• MPN: PS-3865R (APCPS3865R)
• Type: Pool Pump Shaft Seal
• Shaft Size: 5/8 inch
• Application: Ozone, chlorine, and salt water pool/spa pumps
• Compatibility: Cross-referenced with US Seal PS-3865R and PS1000; fits Waterway, AquaFlo, Pentair, American Products, and Acura 1090A pumps

FREQUENTLY ASKED QUESTIONS

How do I know if my pump shaft seal needs replacement?
Water leaking from the bottom of the pump motor housing—typically between the wet end and the motor—is the primary indicator that the shaft seal has failed and needs to be replaced.

Is this seal compatible with saltwater pools?
Yes, this heavy-duty mechanical seal is specifically designed to handle ozone, chlorine, and salt-treated water environments without premature degradation.

What shaft size is this replacement seal?
This seal features a standard 5/8 inch shaft size and is compatible with a wide range of pump models including Waterway, AquaFlo, Pentair, American Products, and Acura 1090A.

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