US Seal Shaft Seal [PS-3960 5/8" Buna Carbon] (PS-3960) cleaners A filter cartridge provides the

A filter cartridge provides the active media that helps the water-care system remove suspended debris during circulation

Supports dependable hands-free control response

An impeller like this is useful because it does the real water-moving work inside the pump

Useful when the original volute is damaged or leaking

small thread differences matter

US Seal Shaft Seal [PS-3960 5/8" Buna Carbon] (PS-3960) cleaners A filter cartridge provides theUS Seal Shaft Seal [PS 3960 5 8" Buna Carbon] (PS 3960) is a replacement pump shaft seal from US Seal Manufacturing, designed for pool and spa pump service where a worn seal can lead to water intrusion, dripping, or reduced equipment reliability. This part is intended for repair situations where the existing seal specification and part number match the pump being serviced. The PS 3960 5 8" Buna Carbon configuration helps restore the seal between the