Metal-Clad Urethane Wiper Ring, 2.25 Inch Rod Diameter, 3.00 Inch Wiper OD, 0.25 Inch Height

For a 2.25-inch rod, you're looking at the right part. The outer diameter comes in at 3.00 inches and the height is 0.25 inches, so as long as your housing bore is machined to accept those dimensions, it should press in clean. The metal cladding is what handles retention in the bore, so you get a consistent fit without needing adhesive or extra hardware to keep it seated.