A Pool Cartridge Filter has an O-ring between the filter head and the filter body. If you see water leaking or spraying out at this junction, it's time to replace this O-ring. This guide shows you how to replace the O-ring on a typical pool cartridge

The O-ring on your pool sand filter is under the Multiport Valve on the top of the filter. To change the O-ring you will have to remove the Multiport Valve. If your filter was not installed with union connections, you will have to cut the piping to your M

How to Seal the O-Ring on a Swimming Pool Filter. Canister filters for aboveground pools incorporate a large rubber O-ring to seal the joint between the upper filter head and the lower body of the ...