Pentair Coil/Tubesheet O-Ring Package | 77707-0117 Pool Filter Grids Technicians value the straightforward design

Technicians value the straightforward design that allows for easy repairs and longevity

Functional purpose: Controls flow direction and port selection within the valve manifold to route water where needed

Standard mesh bag

Integrated Heat Shield Technology: Includes a matching black heat shield that allows for closer mounting to ceilings and combustible structures without compromising safety

Pentair Coil/Tubesheet O-Ring Package | 77707-0117 Pool Filter Grids Technicians value the straightforward designWhat This Part Is Used For Pentair 77707 0117 Coil Tubesheet O Ring Package is a replacement sealing kit used in compatible Pentair heater assemblies. It provides O rings for sealing the coil and tubesheet connections. Why This Part Matters Worn O rings can cause internal heater leaks and pressure loss. Replacing them restores proper sealing and helps prevent water intrusion into critical components. This is especially important during heater rebuilds