Pentair 1.5" HiFlow Diverter Shaft O-Ring

Pentair 1.5" Hi-Flow™ Multiport Valve Diverter Shaft O-Ring (272517)

The Pentair 1.5-inch Hi-Flow™ Multiport Valve Diverter Shaft O-Ring (Product #: 272517) is a small but critical factory-original OEM replacement sealing component designed to maintain a watertight hydraulic barrier within the upper handle assembly of pool and spa filtration systems. Engineered specifically for Pentair and PacFab 1.5-inch top-mount and side-mount six-position multiport backwash valves—commonly utilized on Sand Dollar®, Tagelus®, and Meteor® sand filters—this specialized gasket stretches securely onto the central vertical stem of the internal diverter assembly. As the valve handle is depressed and rotated to select different operational cycles, this o-ring creates a dynamic seal against the inner walls of the valve cover, preventing pressurized pool water from surging up the stem and leaking out of the top of the handle assembly. Molded from a high-grade, chemical-resistant nitrile rubber (Buna-N) compound, the component delivers exceptional compression memory, superior structural elasticity, and long-term ozone resistance, allowing it to withstand continuous exposure to high chlorine concentrations, heavy mineral scaling, and repetitive mechanical friction without tearing or distorting. Replacing a worn, flat, or cracked shaft o-ring is an essential maintenance step that instantly cures common pump room headaches, such as constant water weeping down the side of the valve body or suction-side air induction when the pump is running. Built to endure continuous operating line pressures up to 50 PSI and extreme summer pump room heat, this featherweight part ensures the filter pad operates at peak hydraulic efficiency. The physical weight of this single Pentair 1.5-inch Diverter Shaft O-Ring is approximately 0.01 pounds (less than 0.16 ounces, with a nominal packaged shipping weight of roughly 0.05 pounds), providing pool professionals and DIY homeowners with an essential, low-cost, and highly reliable hardware fix for pristine water circulation networks.