Balboa Heater O-Ring/Gasket [2"] (21619)

Balboa Heater O-Ring/Gasket, 2" (21619), provides a reliable seal for Balboa heater unions in spa pump assemblies. This gasket is designed for 2" heater connections and delivers a precise fit with an inner diameter of 2-1/8 inches and an outer diameter of 2-7/8 inches, with a 1/8-inch cross-section to compress securely between mating surfaces. The part is commonly cataloged as 711-4030 as an alternative reference, and it is compatible with standard Balboa heater union fittings across various spa systems. Features include consistent compression, leak prevention at high-temperature water systems, and straightforward replacement during routine maintenance or component service. Ideal for technicians and DIY spa owners performing seasonal service, heater inspections, or gasket replacements. By choosing this Balboa gasket, users can maintain efficient flow and prevent water leaks, contributing to longer heater life and reduced downtime. Balboa Water Group is a trusted brand in spa and pool equipment, known for compatible, durable replacement parts that fit reliably with standard unions.

Heater Union Part Type	Gasket
Part Type	Gasket
Union Fitting Application	Pump
Inside Diameter	2-1/8" id
Outside Diameter	2-7/8" od
Union Fitting Part Type	O-Ring/Gasket
Manufacturer	Various