Hy 46andonehalf, that "seal" shows up in my National book as p/n 2081 $5.88 U.S.D. at Rock Auto, that crosses to Napa p/n 28426, they wouldn't give me a price, they said to contact the store. Those part numbers are just for the seal, you would have to remove your old seal from the metal flange and install the new seal in it, the dimensions of the seal are i.d. or shaft size 2.843", o.d. or bore the seal fits in is 3.939", the width is .495" hope that helps.