The Hayward ECX9611246PAK3 Shaft O-Ring Set contains three high-quality rubber o-rings ideal for use in pool and spa filtration systems. These o-rings are required to ensure a secure and leak-free seal around the shafts of various pool equipment, such as pumps and motors. It works by creating a tight seal between the rotating shaft and the surrounding housing. This seal keeps water an... https://www.usapoolshop.com/ecx9611246pak3-hayward-shaft-o-ring-3-pack