Pentair Max-E-Therm Control Panel Cover Retainer Cap (77707-0009) tees The Mer-Made O-ring is designed

The Mer-Made O-ring is designed for compatible C10X strainer applications where a dependable seal is needed between connected parts

Supports more complete chlorinator restoration

A pump like this is useful because it provides a full replacement solution while preserving the flexibility of a two-speed operating profile

The 25577-231-900 is a practical solution when a compatible installation needs a waterfall unit to restore dependable visual and water-flow performance

Pentair Max-E-Therm Control Panel Cover Retainer Cap (77707-0009) tees The Mer-Made O-ring is designedSecure the control panel cover on compatible Max E Therm heaters with this retainer cap. Small hardware pieces like this can make a noticeable difference when the cover no longer stays aligned or seated, especially on outdoor heaters exposed to sun, moisture, and regular handling. This replacement is useful during panel service, cosmetic repairs, or heater restoration work where the cover hardware is incomplete. Replacing the correct cap can help