SpaShopper offers this 2 1/2" Therm Style Gasket designed for heater or pump union connections in hot tub plumbing systems. This gasket-only replacement works with 2 1/2" heater tubes and pump unions.

Critical Measurements: This gasket features precise dimensions of 3 1/4" O.D. x 2 3/4" I.D. with a lip measuring 3 1/8" center to center. Please verify these measurements match your existing gasket, as we stock an alternate 2 1/2" version with different interior dimensions (3 1/4" O.D. x 2 3/8" I.D., lip 2 7/8" center to center).

Popularity Ranking: This Therm style gasket is our 4th most requested size. The 2" size leads in popularity, followed by 1 1/2" in second place and 1" in third position.

Application: Used for sealing connections between heater tubes and heater unions or between pump unions and pumps in spa circulation systems. Compatible with Blue Ridge and Gatsby hot tub models.

Important: Heater tube shown in product images is for reference only and not included with purchase. Complete union kits with nut and retaining ring available separately, as well as two-pack gasket sets.