Therm Products - AquaTemp Uni-Nut Retainer for 3in Heater Union Repair

AquaTemp Uni-Nut retainer 82-02360 is a split-ring, MBT outside threaded retainer ring that helps make field repairs to leaking union nuts with the use of the Uni-Nut (sold separately). 3"" MBT threads measure 3.5"" OD, to fit 3"" heater tubes and unions.

See Owner's Manual for details