Crankshaft Oil Seal-Rear: Description
WARNING: This page is about a different car, the 2003 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
The crankshaft rear seal is a two piece viton seal. One part of the two piece rear seal is located in a slot in the cylinder block opposite the crankshaft main bearing cap, the second part of the two piece seal is located in the main bearing cap itself.