Pentair Sta-Rite MasterTemp/Max-E-Therm Manifold O-Ring Kit (77707-0120) intermatic The black finish gives this

The black finish gives this version a bold

and water feature maintenance

That helps keep the repair focused on the true water-movement issue rather than replacing a much larger assembly

Part number 3903-DF provides a reliable reference for service matching

Pentair Sta-Rite MasterTemp/Max-E-Therm Manifold O-Ring Kit (77707-0120) intermatic The black finish gives thisThis manifold O ring kit provides the sealing components needed when servicing compatible MasterTemp and Max E Therm heater manifolds. O rings should typically be replaced whenever the manifold is opened or related fittings are disturbed, since compressed or aged seals may not reseal reliably. The kit helps reduce the chance of nuisance leaks after repair and supports a cleaner, more complete rebuild. Sealing kit for compatible heater manifold repairs