John Deere Original Equipment Seal - W42122 Internal Oil Steel Seal Part Specifications: Shaft Diameter (MM) 45.0000, Seal Outside Diameter (MM) 85.0000, Width (MM) 10.0000, Spring Type (ALPHA) Garter, Number of Lips (ALPHA) SINGLE. Fits the following John Deere models: Rotary Cutter: 1518, 2018, 709, 609, 509, HX15, CX15, HX20, CX20, HX10, HX14, E12, E15, FC10R, FC12E, FC15E, FC15M, FC15R, FC20M, FC20R, HX6, HX7, M15, M20, MX15, MX10, MX8, R10, R15, R20, RC10M, RC10R, RC14R, RC6R, RC7R, RC8M. Mower Conditioner: 525, 530, 535, 625, 630, 635, S250, S300, S350. This is an O.E.M. John Deere part.