Harmonic balancer
 

Any help is appreciated, my wife has a 2004 chevy colorado,with a 5 cylinder engine and we had to replace the front engine seal, but on rhe harmonic balancer it aapears to be another seal on it , but were not able to locate or find one on the interweb or at parts store
https://cimg7.ibsrv.net/gimg/chevrol...16c70cf58e.jpg

https://cimg3.ibsrv.net/gimg/chevrol...5dd6dbf9dd.jpg