Pentair Small CNC Filter Lid Replacement (178548Z)

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This small CNC filter lid replacement is designed for compatible Pentair cartridge or filter assemblies where the original lid has cracked, warped, become difficult to seal, or suf fered damage during service. A dependable lid is important for proper filter closure, pressure containment, and ease of maintenance.Replacing the lid can restore safer, cleaner filter operation without changing the entire filter body. Always confirm the filter model, lid size, and required O-ring or clamp components before ordering. Inspect the sealing surface and pressure-relief hardware during installation for a complete repair. Show more