The Hayward union nut is designed for compatible 1-1/2 inch plumbing applications where a serviceable union connection needs dependable fastening. A nut like this is useful because it helps secure the removable union assembly while preserving the ability to disconnect the plumbing later for maintenance or repair.This replacement is especially useful when the original nut is cracked, stripped, warped, or missing. Installing the correct union nut can help restore cleaner plumbing retention and improve the overall condition of the connection.The SPX1068C is a practical replacement for compatible Hayward plumbing systems that need renewed union support and dependable assembly security. Hayward union nut 1-1/2 inch size Designed for compatible serviceable plumbing connections Useful when the original nut is damaged or missing Supports cleaner and more dependable union fitment