Pentair WhisperFlo 5/8" Buna 1000 Shaft Seal (071734S) aircontrols A contactor like this is

A contactor like this is useful because it restores a compact switching component in equipment that relies on a single-pole electrical control layout

Water Tech motor box

Helps restore advanced jet action and premium trim style

or overly stiff

which should be compared against the original part

Pentair WhisperFlo 5/8" Buna 1000 Shaft Seal (071734S) aircontrols A contactor like this isPentair Shaft Seal, Pentair WhisperFlo, 5 8", Buna, 1000 (071734S) is a replacement sealing part for compatible Pentair pool and spa equipment. O rings, gaskets, square rings, and shaft seals help create watertight connections between lids, housings, valves, pumps, and other equipment assemblies. Replace this part when the existing seal is flattened, cracked, swollen, leaking, or damaged during service. For best results, clean the mating surfaces and