Description
Replacement manifold and tube sheet coil O-ring kit for Pentair MasterTemp and Sta-Rite Max-E-Therm heaters (77707-0120). It restores a watertight seal between the burner manifold/header and the heat exchanger tube sheet to stop leaks and keep flow consistent. OEM kit with the necessary O-rings/gaskets for those joints; apply silicone-based lubricant and seat evenly during reassembly.
Includes: 1 Header O-Ring, 12 Tube Sheet O-Rings
