Pentair Shaft Seal | U109-372SS Pool Pole Accessories Example: A 21' Round Cover

Example: A 21' Round Cover with 4' Overlap would measure 25' on a flat surface

and 2-1/2 HP models Pentair Dyna-Pro / Dyna-Pro E MPRA6G-207 1-1/2 HP

Quick to disconnect

count the bolt holes on your existing niche ring and confirm it matches the 10-hole pattern

Pentair Shaft Seal | U109-372SS Pool Pole Accessories Example: A 21' Round CoverThe Pentair Shaft Seal (U109 372SS) is the OEM replacement shaft seal for Pentair pool and spa pumps, used during motor replacement and routine pump service. The shaft seal creates the critical barrier between the pump's wet end and the motor, preventing water from contacting the motor bearings. When replacing a pump motor, the shaft seal must always be replaced at the same time reusing a worn seal on a new motor is a leading cause of premature motor