This part is a 2" Pump Union Gasket 2 1/2" Lip Center to Center..
Note: Some Pump unions have a gasket that has a 2 5/8" Lip Center to Center..
We offer a split kit with both sizes click here.. Gasket Combo - Set of (4) Hot Tub Spa 2" Heater or Pump Union (2) 2 1/2" Lip & (2) 2 5/8" Lip Gasket
