Maintain your water softener's filter with this Fleck filter seal kit. This kit is made for size 5600 valves and works on a variety of water softener systems. The seal helps prevent water leaks from the filter while the water softener cycles. The filters are made out of black plastic, and the kit includes the spacers and seals. The seals are lubricated with a small amount of silicone grease for ease of installation.