Pentair System 3 Modular DE Elbow Assembly O-Ring (35505-7438Z) airsupply Replacing the full set together

Replacing the full set together helps restore a more complete seal profile than changing only one visibly worn ring

Replacing it can help refresh the valve’s internal integrity and improve confidence in the way the valve performs during use

A WiFi module is useful because it extends system access beyond the physical topside interface

Good fit for cosmetic and functional panel refresh work

The 98116-001 is a practical service part for compatible AquaPro AL50 systems that need renewed pump-basket performance and easier maintenance

Pentair System 3 Modular DE Elbow Assembly O-Ring (35505-7438Z) airsupply Replacing the full set togetherRefresh a critical sealing point with this genuine Pentair Pool Products O ring, part 35505 7438Z. O rings are often the first parts to flatten, stretch, crack, or dry out, and replacing them can correct leaks that appear around valve bodies, filter fittings, drain ports, or pump assemblies. Use a pool safe lubricant where appropriate and confirm the part number against the exact Pentair model being serviced. A properly sized seal helps preserve