This is a A-15673SW Seal PN: 15673SWMain Description As Following : A-15673SW Seal P.N: 15673SW A-15673SW Seal P.N: 15673SW Stocked As: A-473228-I Found in Section & Models : Hay Tool Parts > Rotary Cutter Parts, Sidewinder ROTARY CUTTER: VARIOUS MODELS Associated Items : New Also This is An Aftermarket Product And : High Quality Afternaket Shipped from Both US and Canada