Pentair Coil/Tubesheet Sealing O-Ring Kit | MasterTemp 125 Heater | 474973 AS100P This helps protect other metal

This helps protect other metal components in the pool

and 140HC only

AquaPill Instructions Video

The Pentair Center Core (59053800) is the OEM replacement structural core for Pentair Clean & Clear

across flats

Pentair Coil/Tubesheet Sealing O-Ring Kit | MasterTemp 125 Heater | 474973 AS100P This helps protect other metalThe Pentair 474973 is the OEM Coil Tubesheet Sealing O Ring Kit for the MasterTemp 125 Heater the correct replacement when servicing the internal sealing surfaces where the heat exchanger coil meets the tubesheet assembly. IMPORTANT: KIT LISTING MULTIPLE O RINGS INCLUDED This listing is a kit, not a single O ring. It contains the complete set of coil tubesheet sealing O rings required for a full service of the MasterTemp 125 heat exchanger assembly.