Hayward Valve/Clamp O-Ring fits on Hayward Pro Series Sand Filters.
· Fits Hayward Pro Series Sand Filter models S164T, S166T, S180T, S210T, S220T, S230T, S244T, S245T, S190T
· Hayward part number GMX600F
· Inner diameter measures 6-3/4", outer diameter measures 7-1/8 in.
· Factory original Hayward replacement part