Pentair WC9-3 O-Ring Replacement for Select Sta-Rite Pool/ Spa Cartridge Filters pan screw replacement Fits models PTM50

Fits models PTM50

or extra water from the system

● Poor Water Quality

This Pentair high-flow manual air relief valve is compatible with select FNS® Plus

Part Number: 178575

Pentair WC9-3 O-Ring Replacement for Select Sta-Rite Pool/ Spa Cartridge Filters pan screw replacement Fits models PTM50Ensure a tight, leak free seal for your filtration system with the Pentair WC9 3 O Ring Replacement, a high quality cartridge filter o ring designed for long lasting performance in pool and spa environments. Built for reliability, this replacement O ring helps maintain proper pressure while preventing water and air leaks that can reduce filtration efficiency. Wide Compatibility Compatible with Sta Rite Posi Flo II pool and spa cartridge filters Fits