The Pentair 87200800 segmented liner nut is designed for compatible pool fitting applications where the retaining nut component needs replacement. A part like this is useful because it helps secure the related fitting assembly, particularly in liner-style applications where proper retention and fit are important.Replacement is often appropriate when the original nut is cracked, stripped, missing, or damaged during service. Installing the proper Pentair nut can help restore the fitting assembly and support a more dependable final installation.This OEM liner nut is a practical service component for compatible pool fitting repairs that need the correct retention hardware. OEM Pentair segmented liner nut Fits compatible pool fitting applications Helps secure the related fitting assembly Useful when the original nut is damaged or missing Supports cleaner and more dependable fitting retention