You are buying a 2 1/2" Pump or Heater Union Gasket Only for use with a 2 1/2" Heater or Pump Union. If your heater or Pump is 2 1/2" this part could be correct we offer (2) different sizes of 2 1/2" gaskets so you need to verify your measurements. This gasket measures 3 1/4" O.D. x 2 3/8" I.D. and the lip is 2 7/8" center to center. The other gasket we offer is 3 5/16" O.D. x 2 3/4" I.D. and the lip is 3 1/8" center to center. This version is the 4th most popular version. 2" is the most popular, 1 1/2"is 2nd most popular and 1" is 3rd most popular. This part is used in hot tubs to plumb a heater tube to a heater union or a Pump Union to a pump. Note: The Heater tube in pictures is NOT included!! Note: We offer this gasket in a kit with the Nut and retaining ring and in a set of two as well in our eBay store.
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ASP 711-6020