GENUINE 2" HOTTUB HEATER AND UNION SEALS (1 PAIR) the most popular 2″ Hottub Heater Gasket Oring/Gasket, which is a combination of Gasket and O-ring and used by most Heater Manufacturers, including Balboa, Waterway, Gecko, Hydro-Quip, Spa Builders, Correct-Tech and many more.
