Pentair Sta-Rite MasterTemp/Max-E-Therm Tube Sheet O-Ring Kit [Qty 12] (77707-0119) lascofittings The high-volume design matters because

The high-volume design matters because it is intended to support systems with greater flow expectations

Improves heating-system confidence and repair accuracy

Installing the correct Pentair pump can help improve circulation management and support a more refined equipment setup

Use this part for targeted repairs

or missing its seal

Pentair Sta-Rite MasterTemp/Max-E-Therm Tube Sheet O-Ring Kit [Qty 12] (77707-0119) lascofittings The high-volume design matters becauseThe tube sheet O ring kit with twelve seals is used during deeper MasterTemp and Max E Therm heat exchanger or tube sheet service. These seals help prevent water from escaping around the tube sheet connections and should be replaced when the related assembly is opened. Having the correct quantity in one kit supports a more complete repair and avoids mixing old seals with new components. Includes twelve tube sheet O rings Supports compatible MasterTemp