Hydro-Quip 3" Heater O-Ring/Gasket [Qty-2] (60-0020-K-2) leafbone and this Filbur FC-2770 cartridge

and this Filbur FC-2770 cartridge is designed for 7CH-90 and PSD90P4 applications

giving service teams and pool owners a complete replacement set rather than piecing cartridges together one at a time

When a system requires a clean split in a supported cable path

Replacement is often needed when the original diffuser is cracked

Hydro-Quip 3" Heater O-Ring/Gasket [Qty-2] (60-0020-K-2) leafbone and this Filbur FC-2770 cartridgeThe Hydro Quip 3 inch heater O ring and gasket is designed for compatible heater sealing applications where the connection point needs a fresh sealing component. A seal like this is useful because it helps maintain a dependable barrier against leaks at an important heater interface, supporting both performance and service confidence. This replacement is especially useful when the original O ring or gasket is flattened, brittle, leaking, or being