Pentair 8.5" Trap Cover O-Ring | Max-E-Glas II / Dura-Glas II / Dyna-Glas / Dyna-Max / Dyna-Wave Pumps | U9-375Z Commercial pools containing heavy growth of

pools containing heavy growth of algae should be cleaned prior to using this product

the pump loses the ability to modulate speed

ozone and mineral purification systems

confirm your heater's model number on the rating plate — typically located on the side or rear of the unit

The feed hose swivel connects the supply hose to the cleaner body

Pentair 8.5" Trap Cover O-Ring | Max-E-Glas II / Dura-Glas II / Dyna-Glas / Dyna-Max / Dyna-Wave Pumps | U9-375Z Commercial pools containing heavy growth ofThe Pentair U9 375Z is the OEM replacement 8. 5" trap cover O ring for the Max E Glas II, Dura Glas II, Dyna Glas, Dyna Max, and Dyna Wave series pumps. If your pump's strainer cover is weeping water or losing prime, this O ring is the first part to inspect and replace. IMPORTANT: LUBRICATION REQUIRED SOLD SEPARATELY Always lubricate this O ring with a silicone based lubricant before installation. We carry the Pentair R172351 Lifeguard Silicone