cloggedsink

Hi all, My sink was draining really slowly yesterday, so I plunged it with a sink plunger. Right when I started plunging, big and small chunks of black corroded rubber started shooting out of the overflow hole. When you squeeze this rubber, it turns into a sort of paste that looks like mascara...

Ok so this is clogged or something and it won't go down... I have snaked the p trap and then just replaced all the p trap pipes with new ones as well as replaced the vent and nothing worked so now I'm trying to snake the pipe in the picture because it seems to be clogged here but its not...