This is a Generic O-Ring Repair Kit with dimensions that will work with Hayward GM Series Filters. The kit includes APCO2347 Drain Plug O-ring for R172451, APCO2441 Valve Lid O-ring for GMX600F, APCO2210 Tank O-ring for GMX400F, and 1020CL86 6 gram packet of Silicone.








