O-Rings & Gaskets

You are buying a O-Ring that fits a Waterway Brand2 1/2" Slip X 2 1/2" Threaded Pump Union with Gasket or O-ring that matches Union. This o-ring measures about 2 3/4" Inside Diameter and is 1/8" Thick... Please Choose with Care as We Do Not...

You are buying a Gasket & O-Ring that fits a 5"x 5" Flange Heater. NOTE: This listing does not include the heater!! These Parts are found in Plastic Heater housings in Brett Aqualine, Premier Allstate, and Hot Water Products. I...

This part is a Set of (10) Standard 2" Heater or Pump Union Gasket with a 2 1/2" Center to Center Lip. The gasket is 2 7/8" across on the outside the inside diameter is about 2 3/16" and the lip that fits into the union is 2 1/2"...

This part is a Set of (8) Standard 2" Heater or Pump Union Gasket with a 2 1/2" Lip Center to Center. The gasket is 2 7/8" across on the outside the inside diameter is about 2 3/16" and the lip that fits into the union is 2 1/2"...

This part is a Set of (6) Standard 2" Heater or Pump Union Gasket with 2 1/2" Center to Center Lip... The gasket is 2 7/8" across on the outside the inside diameter is about 2 3/16" and the lip that fits into the union is 2 1/2"...

This part is a Set of (4) Standard 2" Heater or Pump Union Gasket with a 2 1/2" Center to Center Lip. The gasket is 2 7/8" across on the outside the inside diameter is about 2 3/16" and the lip that fits into the union is 2 1/2"...

This part is a Set of (3) Standard 2" Heater or Pump Union Gasket with a 2 1/2" center to Center Lip.. The gasket is 2 7/8" across on the outside the inside diameter is about 2 3/16" and the lip that fits into the union is 2 1/2"...

This Part is a Set of (2) Standard 2" Heater or Pump Union Gasket with a lip that is 2 1/2" Center to Center. The gasket is 2 7/8" across on the outside the inside diameter is about 2 3/16" and the lip that fits into the union is...

You are buying a 2 1/2" Thread X 2" Slip Heater Union with Gasket that matches Union. The Union receives a 2" pipe or fitting on the glue side and then Screws to a 2 1/2'" Heater Flange using a 2 1/2" Nut on the heater side...

This part has been discontinued by it's manufacturer.. You are buying a 2 1/2" Thread X 1 1/2" Slip Heater Union with Gasket that matches Union. The Union receives a 1 1/2" pipe or fitting on the glue side and then Screws to a 2...

This part is a Set of (2) 2 1/2" Pump or Heater Union Gasket Only for use with a 2 1/2" Pump Union that meausres about 3 5/8" inside the threads. This gasket measures 3 1/4" O.D. x 2 3/8" I.D. and the lip is 2 7/8" center to center.  This...

Note: Before You Buy This Part be sure it is correct..It would be very rare for this to be your heater nut unless you have Swim Spa with a very large 3" heater... These are found in some smaller hot tubs but is very rare. Watch the video and Check the...