US Seal Shaft Seal [PS-851 3/4" Shaft Buna] (PS-851) dialvalves this Waterway internal is a

this Waterway internal is a practical replacement when a threaded 3-3/8 inch roto insert in white is needed

Useful when the original harness is damaged or unreliable

Designed for compatible bromine sanitation systems

That makes it practical for regular field service

Helps improve fit and mounting-area coverage

US Seal Shaft Seal [PS-851 3/4" Shaft Buna] (PS-851) dialvalves this Waterway internal is aUS Seal Shaft Seal [PS 851 3 4" Shaft Buna] (PS 851) 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 851 3 4" Shaft Buna configuration helps restore the seal between the motor