<br><br> Stop Leaking Waterways: Fits Most Spa Pump or Heater Unions.<br><br> Application: This gasket goes on unions between the union and pump<br> wet end fittings and heaters and union fittings.<br><br> Dimensions: The gasket is 3" across on the outside and the inside<br> diameter is 2.2". Please ensure your union features the correct dimensions<br> to host this gasket before purchasing. (Outer Diameter: 3’’ or 76mm ---<br> Inner Diameter: 2.2’’ or 56mm --- Thickness: 0.1’’ or 2.6mm).<br><br> Tip For Easy Installation: Use your choice of silicone grease on one side<br> or both sides, to help hold the spa gasket in place while assembling the union<br> which will also allow easier removal in the future.<br><br> Installation Instructions: For detailed steps on how to install these gaskets,<br> please search online for "How To Replace Leaking Hot Tub Heater Union Gaskets".<br><br>Spa gaskets are important for creating watertight plumbing connections in your hot tub.<br>Don't let a bad gasket ruin your Hot tub or Spa experience. Our gasket is a heater accessory<br>and used on heater unions that connect to 2 inch inner diameter plumbing and heaters.<br><br> Stop leaky unions and get your replacement spa gaskets today! <br>