Description
These replacement gaskets come as a pair (2 pieces) designed for 2 1/2″ pump or heater unions with approximately 3 5/8″ interior thread measurement. Each gasket features precise dimensions of 3 1/4″ O.D. x 2 3/8″ I.D. with a 2 7/8″ center-to-center lip measurement. Among union gasket sizes, this ranks as the 4th most commonly used configuration, following 2″ (most common), 1 1/2″ (second), and 1″ (third) sizes. These sealing components create a watertight connection between your spa pump union and pump body, preventing leaks at the connection point.
