i need the rubber o ring that goes on the oil pump

[BigBlockSam]

hey guys . all i have for my oil pump on my 440 motor is the pump and a gasket . isn't there suppose to be a  rubber oil ring too ? where can i get that ? 

[tan top]

     have a look here  selling separate pieces   !!   , sure i've seen  them all together in one oil pump rebuild kit   , but always bought / buy them as part of a engine taredown kit from felpro , as i'm always taking stuff appart & swapping stuff  

http://chucker54.stores.yahoo.net/oilpumpgasket.html