impresa products 4 pack spa hot tub pump heater union gasket/o-ring - 2.2'' id 3'' od'' flat gasket works on variety of spas impresa products <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>