Sundance Sweetwater 2005+ 780 Series 2-Pump Topside Control (6600-633) cmp The 5/16 inch cross-section gives

The 5/16 inch cross-section gives this O-ring practical value because larger sealing surfaces often require more material than standard lighter sections can provide

The Hayward housing O-ring is designed for compatible TriStar and EcoStar C housing applications where the main housing connection needs dependable sealing

It is used in the heater combustion system to help meter the air path for the correct burner configuration

The RK20006 is a practical service part when a compatible Nemo Power Tools hull cleaner needs a lower body assembly to restore dependable support

Sundance Sweetwater 2005+ 780 Series 2-Pump Topside Control (6600-633) cmp The 5/16 inch cross-section givesThe Sundance Sweetwater 2005+ 780 Series 2 Pump Topside Control is a replacement control panel for compatible Sundance and Sweetwater spa systems. It is designed for supported two pump configurations and provides the user interface for operating spa functions. This topside should be matched carefully by series, production year, pump configuration, and connection style. Use it when replacing a cracked, faded, unresponsive, or malfunctioning control