Hayward SPX0710XZ3 Cover O-Ring Replacement for Hayward Multiport and Sand Filter Valves Cover o-ring replacement Fits hayward multiport valve models sp0710, sp0710x, sp0711, sp0712 Also fits hayward s200 and pro series side-mount sand filter valve models sp1591, sp1592, sp1593 Weighs 1.8-Pound