Pentair Sta-Rite Max-E-Therm Heater Switch Membrane Replacement 42002-0029Z Pentair 90 degree Precise O-478 geometry ensures consistent

Precise O-478 geometry ensures consistent seal compression across service cycles

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With the R0557100 installed

Pentair Sta-Rite Max-E-Therm Heater Switch Membrane Replacement 42002-0029Z Pentair 90 degree Precise O-478 geometry ensures consistentPentair Sta Rite Max E Therm Heater Switch Membrane Replacement 42002 0029Z Intro Replace the aging switch membrane on your Sta Rite Max E Therm pool heater with Pentairs OEM Sta Rite Max E Therm Heater Switch Membrane Replacement (model 42002 0029Z). This ASME compliant part is engineered to restore precise control signals to the heaters switch assembly, supporting reliable startup and consistent heating. Designed specifically for Sta Rite Max E