Cartridge Retainer Nut

SPECIAL ORDER ITEM. Review Returns Policy before purchase. This cartridge retainer nut secures the cartridge firmly inside the valve body, helping maintain proper alignment and reliable faucet operation. It is used during installation or repair to ensure the cartridge remains tightly in place, preventing leaks or handle looseness caused by improper seating. Made for durability and consistent fit, this component is ideal for replacing a worn or damaged retainer during routine faucet maintenance or repair