Generic O-Ring [31-1/2" ID] [5/16" CS] O-105 (O-105) fittingsother Because this part crosses multiple

Because this part crosses multiple Waterway product families

A return nozzle is useful because it helps direct returning water through the intended path

The Hydro-Quip Aquatherm HQ300 current collector is designed for compatible HQ300 heater-related applications where the supported electrical current transfer component needs replacement

3 inch face diameter

The Waterway 400-9130 cartridge mounting assembly is designed for compatible filter applications using a 2 inch NPT connection

Generic O-Ring [31-1/2" ID] [5/16" CS] O-105 (O-105) fittingsother Because this part crosses multipleAn O ring helps create a dependable seal at a compatible very large circular connection, and this generic version is sized with a 31 1 2 inch inside diameter and 5 16 inch cross section using the O 105 reference. When a very large heavy profile O ring becomes worn, flattened, or damaged, the assembly can lose the sealing support it should maintain around the full circumference. The 5 16 inch cross section gives this O ring practical value because very